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920-331 exam Dumps Source : Communication Server 1000 Rls. 5.0 Database Administrator
Test Code : 920-331
Test title : Communication Server 1000 Rls. 5.0 Database Administrator
Vendor title : Nortel
: 55 existent Questions
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Nortel Networks has launched an up to date edition of its communique Server 1000 (CS a thousand). Nortel describes the CS 1000 as a server-based, full-featured IP PBX which serves because the cornerstone of Nortel commercial enterprise Unified Communications deployments, proposing the merits of a converged network plus more than 750 world-category telephony points.
The Linux-based mostly free up 6.0 of the UC platform gives users liberty to exercise hardware from Dell, Hewlett-Packard or IBM. The CS a thousand v. 6.0 besides integrates with Nortel’s contact middle answer, Contact middle 7.0. besides new is the MG 1010, a features gateway for centralized communications app provisioning and augmented SIP assist.
together with the brand new unencumber, Nortel besides debuted new IP handsets and announced enhancements to its conferencing utility.linked
TPx provides text Messaging to Hosted UC service
TPx says texting more and more is getting used for B2C and B2B communications.
CoreDial able to problem RingCentral, 8x8, Vonage in UC
In February, CoreDial introduced it had got CCaaS company Voice4Net.
Plantronics Rebrands to (partly) typical identify
New products and functions acquire been unveiled together with the rebrand.
level three, Amazon companion on world UC provider
With Amazon Chime delivered with the aid of stage 3, corporations acquire entry to an adaptable communications platform with stage three international service level agreements.
informationMicrosoft and Nortel existing Alliance Roadmap
the two corporations first announced their collaboration final summer.
The road map includes three new joint solutions “to dramatically enrich commerce communications by using breaking down the obstacles between voice, electronic mail, immediate messaging, multimedia conferencing and other forms of communication,” in accordance with a press release with the aid of the two companies.
also covered within the announcement are 11 new implementation functions from Nortel and the opening of greater than 20 joint demonstration centers where consumers can sustain the technology, the commentary persevered.
moreover, the two groups spoke of they acquire signed agreements with dozens of valued clientele, and acquire developed a “pipeline of hundreds of possibilities who wish to understand the advantages of unified communications.”
From Microsoft's perspective, it is every solitary a Part of the company's long-time period play to merge every solitary kinds of communications and messaging into a solitary framework. A year in the past, the commerce announced that it became merging its change Server group with its real-Time Collaboration (RTC) group, and that it had begun to believe of both applied sciences comprising a "platform."
the brand new neighborhood was named the Unified Communications community (UCG) and resides in Microsoft's company Division. The theory for the brand new group emanated from a imaginative and prescient of including continuity to a myriad of communications gadgets, technologies and modes -- from e-mail and rapid messaging to Voice over cyber web Protocol (VoIP), audio/video and net conferencing -- in a unified manner.
The three new joint solutions announced by route of the alliance this week are named Unified Communications integrated department, Unified Messaging, and Conferencing.
When it's obtainable in the fourth quarter, UC integrated fork will hold Nortel and Microsoft technology on a solitary piece of hardware that grants VoIP and unified communications in remote offices.
Coming slightly earlier in the 2d quarter, Unified Messaging will purpose to simplify customer deployments, indigenous session initiation protocol (SIP) interoperability between the Nortel communication Server 1000 and Microsoft change Server 2007. The solution contains Nortel expert capabilities for design, deployment and assist.
additionally coming within the fourth quarter, Conferencing will prolong Nortel Multimedia Conferencing to Microsoft office Communicator 2007. It goals to provide a solitary client journey constant throughout functions reminiscent of voice, rapid messaging, presence, and audio- and videoconferencing.
This 12 months, the organizations besides blueprint to extend their present unified communications solution — a unified laptop and tender cell for VoIP, electronic mail, quick messaging and presence — to the Nortel conversation Server 2100, a carrier-grade commerce telephony product helping as much as 200,000 users on a solitary system, in keeping with enterprise statements.
As for the highway map, both agencies acquire fitted greater than 20 joint demonstration facilities in North the united states, Europe and Asia, with more than one hundred further facilities scheduled to open with the aid of midyear.
Nortel has besides added eleven core integration functions to champion customers construct, installation and succor joint unified communications options, together with end-to-conclusion challenge management. Nortel claims it has already skilled greater than 2,200 VoIP consultants to convey these capabilities and may add greater as deployment ramps up.
Stuart J. Johnston has coated technology, specifically Microsoft, when you consider that February 1988 for InfoWorld, Computerworld, assistance Week, and workstation World, in addition to for commercial enterprise Developer, XML & net services, and .web magazines.
Avaya day after today will demonstrate a highway map that indicates how its valued clientele – in particular its newly minted Nortel shoppers -- can stream to unified communications technologies devoid of ripping out present equipment.
Avaya the following day will exhibit a road map that indicates how its customers – in particular its newly minted Nortel clients -- can circulation to unified communications technologies without ripping out present gear.
the surge and tumble of Nortel
The blueprint exceptionally addresses how the commerce will eradicate overlap between its own and Nortel's product strains, every so often favoring Avaya expertise, once in a while Nortel's, in the areas of unified communications, contact centers, petite and midsize agencies as well as community infrastructure. on the equal time the blueprint allows for permeate savings by the exercise of SIP trunking so that it will let customers ship voice and information over one pipe in situation of distinct lines and different reduced charges through centralizing administration of corporate mobilephone systems, Avaya says.
The net influence, says Alan Baratz, senior vp and president for world communique solutions at Avaya, is elevated capabilities, reduced costs and fewer disruptive change.
Promising to achieve a mighty Part of this inside the year is an aggressive purpose that may besides stir Nortel consumers trying to find an attractive route to unified communications, says Zeus Kerravala, an analyst with the yankee community.
offering on time is captious as a result of former Nortel clients that are looking to aggressively pursue UC may not want to wait and wait, he says. Avaya CEO Kevin Kennedy's time at Cisco may assist because of that rival's journey in purchasing different groups and integrating them smoothly, he says.
"each Nortel client goes to acquire a competitive vendor trying to create a course to their own unified communications answer," he says. Fumbling may not subsist fatal, Kerravala says, however might imply a loss of the remarkable 25% marketshare he says Avaya has gathered in telephony.
As for the specifics of the street map, including an necessary SIP layer into the communications hierarchy should subsist completed via Avaya air of secrecy, the business's SIP-based verbal exchange application platform that may subsist sandwiched between communications infrastructure - such as PBXs - and features - equivalent to voice, video, messaging, conferencing and mobility.
With charisma in area, legacy Avaya and Nortel PBXs will interoperate with SIP-based VoIP apparatus. So Nortel verbal exchange Server a thousand IP PBX with air of mystery layered on usurp of it might interface with SIP-based phones plugged into the air of mystery aspect of the network. every solitary the telephones would acquire CS one thousand points and the equal button sequencing as a route to navigate those aspects, Baratz says. also, legacy Nortel phones can subsist plugged into the air of secrecy aspect of the community.
This trot will nick back can permeate of adopting unified communications since it reduces the necessity for replacing PBXs and telephones as well as the permeate of retraining conclusion clients in how new telephones work, he says.
The blueprint requires application integration and it may not happen overnight, Baratz says, nonetheless it will subsist accomplished by means of the conclusion of this 12 months, seemingly in November, Baratz says. Nortel's commerce Communications gadget manager could subsist integrated into air of secrecy, as will Nortel's Agile Communications ambiance (ACE), which allows for infusing purposes with communications capabilities.
The changes can subsist disbursed as software improvements to latest aura purchasers.
This strategy isn't spectacular, Kerravala says, as a result of air of secrecy turned into designed to include an SIP-based mostly equipment, no depend who the supplier. Integration with Nortel gadget should soundless subsist simpler because Avaya owns both sets of belongings so can gain their SIP implementations appropriate. specifications-compliant implementations of SIP can vary enough that they don't interoperate, he notes.
in the region of contact facilities, Avaya will strengthen Nortel Contact seat application and then combine it into its present line. Over the next six to 9 months, extra revisions of Nortel's Contact core will prepare it to eddy into the Avaya providing for midsize agencies instead of Contact middle express.
After that, the contact core application from Nortel could subsist advanced to incorporate architectural points from both Nortel and Avaya strains, then extra developed to scale to enterprise proportions. These two revisions will capture six to nine months each. At that factor the utility will eddy into an upgrade to substitute Avaya's high-end Contact core Elite.
Baratz says that even earlier than the acquisition of Nortel, Avaya stated that Nortel's midsize contact seat become more desirable. "It become very near the top-rated product they desired," he says.
Avaya plans to slowly reduce the number of telephony alternatives purchasable for petite and midsize organisations. It plans to carry legacy Avaya partner and integral 5 key methods as well as Nortel Norstar programs below the umbrella of its IP office gear.
IP workplace might subsist developed to aid Norstar techniques and Nortel enterprise Communications supervisor hybrid PBXs, and a number of years down the line will substitute them. but in the meantime, Norstar and BCM will continue to subsist available. "Nothing abrupt goes to ensue here," Baratz says.
Nortel's application Communications gadget SIP appliance will connect the portfolio as is. There isn't any analogous Avaya product.
Nortel brought along a portfolio of switches, community security and wireless gear for which Avaya has no competing equipment. Avaya plans to sell these products and boost them to interoperate more closely with its unified communications infrastructure, Baratz says.
as an example, the instant gear and switches can besides subsist tweaked to give extra complete facts concerning the presence of cellular workers. at present they exhibit even if a person is available by means of voice. With enhanced integration they may swear that the particular person is purchasable on a cellular device and the situation it's discovered, he says.
however Kerravala says that Avaya needs to boost its gear to subsist aggressive with other infrastructure providers characteristic for characteristic, now not simply to acquire switches and routers that expand communications. He says Avaya owns 5% of the infrastructure market by using handicap of buying Nortel and may let it operate as a divorce division at once taking on Cisco, HP and others. "or not it's a great attach in base," he says.
This story, "Avaya lays out Nortel migration street map," turned into originally posted at NetworkWorld.com. keep the latest tendencies in unified communications at network World.learn extra about this subject
Avaya announces server to unify communications by means of SIP
Avaya closes Nortel deal
Nortel's bankruptcy: A 12 months of main alternatebe Part of the network World communities on fb and LinkedIn to remark on themes that are desirable of intellect.
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In the not so far-off past, VMware held a long and commanding lead in the server virtualization space, offering core features that were simply unmatched by the competition. In the past few years, however, competition in virtualization has been fierce, the competitors acquire drawn near, and VMware has been left with fewer ways to distinguish itself.
The competition may acquire grown over the years, and VMware may not savor quite as great a lead as it once did -- but it soundless enjoys a lead. With useful improvements to a number of key features, as well as the bundling of functions such as backup and recovery that were previously available separately, vSphere 6 is a worthy addition to the vSphere line. That said, some of the major advances in this version, such as long-distance vMotion, will matter most to larger vSphere shops.Big changes in vSphere 6
The mighty changes in vSphere 6 revolve around expanded resource limits, enhanced vMotion capabilities, a more complete version of the Linux-based vCenter Server Appliance, storage offloading, and enhancements to the Web client. In addition, VMware has bundled extra technologies into vSphere 6, such as the vCenter Director content library that is used to store ISO images, templates, scripts, OVF files, and other elements, and to automatically divide them across multiple vCenter servers. The Data Protection Advanced backup and recovery tools are now included as well.
VMware vSphere 6 offers advances in the previously existing frailty Tolerance feature. frailty Tolerance is the technology by which a solitary VM can acquire presence on multiple physical servers simultaneously. Should the physical server running the energetic instance fail, the secondary instance is immediately activated. Without frailty Tolerance, the VM could subsist automatically restarted on another host, but would require time to detect the failure and boot on the new host. With frailty Tolerance, that step is avoided.
In previous versions of vSphere, frailty Tolerance supported only a solitary vCPU per VM and four fault-tolerant VMs per host. In vSphere 6, the limits are now four vCPUs per VM and either eight vCPUs or four VMs per host.
The main screen of the new vSphere Web Client looks much more dote the Windows client than in previous versions. Note the Recent Tasks window at the bottom.Long-distance vMotion
The vMotion improvements will subsist more germane to those with multiple data centers spread over wide geographic areas. Prior to vSphere 6, live-migrating VMs over great distances was problematic and required elevated bandwidth and low-latency connections to succeed. In vSphere 6, the network tolerances acquire been extended, and vMotions can now subsist completed over links with 100ms latency or less, requiring 250 megabits of bandwidth per vMotion.
In addition, VMs can subsist vMotioned between vCenter servers, and with a proper underlying infrastructure, vMotions can subsist completed without common shared storage. There are restrictions that approach with these expanded capabilities, mostly in the profile of proper network layouts at each side to allow for proper communication of the VMs on each network.
The ESXi 6.0 hypervisor in vSphere 6 can ply up to 64 physical hosts per cluster, up from 32 hosts, and each instance can now champion up to 480 CPUs, 12TB of RAM, and 1,000 VMs. Each VM can now subsist precipitate with up to 128 vCPUs and 4TB of RAM, with vNUMA hot-add reminiscence capabilities.VMware vCenter Server improvements
On the management side, the vCenter Server Appliance is now feature-complete, on par with its Windows counterpart. Previously, you could precipitate the Linux-based vCenter Server Appliance and manage ESXi hosts, but some of the more advanced features (notably Update Manager) of the Windows-based vCenter Server were not available. As of vSphere 6, the appliance can ply every solitary the tasks that a Windows installation can. This is significant word to those who prefer to not manage a Windows server to precipitate vCenter.
Those who precipitate vCenter Server on Windows will notice that the installation procedure is simplified, though it takes quite a while to complete. every solitary of the moving parts that gain up vCenter Server are installed in a solitary installer action now, including the new Platform Services Controller, which handles SSO, licensing, and certificate management. vCenter Server can subsist deployed with every solitary components on a solitary system, or it can subsist split across multiple systems with the Platform Services Controller and vCenter Server installed separately.
Both vCenter Server for Windows and the vCenter Server Appliance now exercise a local PostgreSQL database by default, though external Microsoft SQL Server and Oracle databases are besides supported on Windows and Oracle databases on the appliance. The switch to PostgreSQL will subsist necessary to those running with local databases on earlier versions of vSphere due to the fact that the limitations of the previous Microsoft database are no longer present; thus, local databases can now champion 1,000 hosts and 10,000 VMs.
The vSphere Web Client's right-click context menus are soundless sluggish at times, but overall faster than before.A better Web UI
The first version of the vSphere Web Client was slow, incomplete, and not nearly as fluid as the Windows client, and many users simply refused to work with it. In vSphere 5.5, they saw improvements to the Web client, but it soundless wasn’t quite to the level of the stand-alone client. In vSphere 6, further usability and precipitate improvements gain the Web client more palatable, as does the addition of champion for a broader sweep of client browsers and operating systems. The client integration tools that allow for necessary features dote VM console access are now available for more platforms, including Mac OS X.
Users of the Web UI will note that it bears a stronger resemblance to the stand-alone client, including the recent tasks pane at the bottom that displays what actions acquire been taken within the infrastructure. Further, the context menus available via right-click are better laid out, and the overall navigation in the Web client is better than the previous iterations.
The success of the Web client is crucial to VMware. The company has been warning about the impending demise of the stand-alone client for several releases and currently stresses that using the stand-alone client will restrict the functionality of vSphere to vSphere 5.0 levels. Features and enhancements from vSphere 5.5 onward are simply not available in the Windows client.
Creating a new VM in vSphere 6 using the vSphere Web Client.VMware Virtual Volumes
VMware introduces a new storage integration concept with vSphere 6 called Virtual Volumes. This is essentially tighter integration with SAN and NAS devices to manage storage operations at the virtual disk level. Virtual Volumes are designed to eradicate the necessity to carve out great numbers of LUNs or volumes for virtualization hosts and to offload storage-related operations to compatible arrays, with granularity at the virtual disk level.
This integration includes vSphere Storage Policy Based Management, which uses VMware’s storage API to communicate with storage arrays and connects the administration of VMs and storage through to the vSphere UI. Thus, policies can subsist created and applied to VMs through vCenter while related functions are performed natively by the arrays.
VMware now includes vSphere Data Protection with vSphere Essentials Plus and higher editions of vSphere 6. This is a VM backup and recovery instrument that was previously known as vSphere Data Protection Advanced, a divorce option. This instrument can subsist used to provide application-aware VM backup and restoration, including champion for Microsoft SQL Server, Microsoft Exchange down to the mailbox level, and other well-liked databases and applications.
The VM overview screen in the new vSphere Web Client.Up from vSphere 5.5
With vSphere 6, VMware offers a collection of welcome features that are now bundled in rather than divorce products, advances a number of pre-existing features, and streamlines the installation process. The Web client may soundless cause more than a few grumbles from those who acquire been using the stand-alone client from the beginning, but it’s significantly better than in previous iterations.
The advances in vMotion and other cross-site features are of limited exercise to shops not running multiple interconnected data centers with enough dedicated bandwidth to champion those features. But as VMware increases the tolerances to lower bandwidth and higher latency, the viability of introducing such features grows.
There’s no mistaking the fact that VMware continues to hold the leadership role in server virtualization, but as the feature sets of the top vendors continue to converge and competing solutions continue to accumulate more robust, they may contemplate more of this feature bundling and simplified licensing in the future. For now, vSphere 6 maintains its situation as the cream of the crop.
We examine the performance of EGNOS in Finland, which lies near the northeast periphery of the coverage area, and how this performance can subsist improved now and in the future.
By Mohammad Zahidul H. Bhuiyan, Heidi Kuusniemi, Auryn Soderini, Salomon Honkala and Simo Marila
“[O]NE ORBIT, WITH A RADIUS OF 42,000 KM, has a period of exactly 24 hours. A body in such an orbit, if its plane coincided with that of the earth’s equator, would revolve with the earth and would thus subsist stationary above the identical spot on the planet. … [A] transmission received from any point on the hemisphere could subsist broadcast to the all of the visible mug of the globe, and thus the requirements of every solitary feasible services would subsist met.” So wrote writer and futurist Arthur C. Clarke in his October 1945 Wireless World article “Extra-terrestrial Relays: Can Rocket Stations Give World-wide Radio Coverage?,” envisaging the geostationary orbit (GEO) communication satellite.
The first GEO satellite was Syncom III, orbited by the United States in August 1964. Since then, more than 1,000 satellites acquire been launched into what is known as the Clarke Belt and around 450 are presently active. Most of them are used for civil or military communication. Some are used for direct-to-user TV and radio. Some are used for weather monitoring and other kinds of surveillance. And some are used for augmenting GPS.
While GPS is a remarkable positioning system, its real-time accuracy using L1-frequency pseudorange measurements and its instantaneous integrity are not enough for some applications such as aircraft navigation. That is why the U.S. Federal Aviation Administration developed the Wide region Augmentation System (WAAS), the first satellite-based augmentation system (SBAS). WAAS provides differential correction data and integrity information to GPS users in existent time throughout most of North America using a “bent pipe” from a ground station through the GEO satellite to a user’s equipment. It uses a state-space-domain correction approach, which provides corrections for the satellite orbit and clock data transmitted by GPS satellites along with ionospheric propagation delays, every solitary computed from measurements collected by a continent-wide tracking network.
The WAAS concept has been duplicated for other regions. Three other SBASs are in full operation: the European Geostationary Navigation Overlay Service (EGNOS), Japan’s Multifunctional Transport Satellite Satellite-based Augmentation System, and India’s GPS-aided GEO Augmented Navigation System. Russia’s System for Differential Correction and Monitoring is currently in development.
One hitch with GEO satellites whatever their office is their inability to service elevated latitudes well. At a latitude of 65°, a GEO satellite has an altitude angle of only around 17° at most and at 75°, it’s about 6° or less. Even if a GEO satellite is above the local horizon, communication might subsist difficult due to the longer signal path length between the satellite and the user.
And so it is with GEO satellites used for SBAS at elevated latitudes. And there is an additional problem that even if the signals from an SBAS satellite can subsist received, corrections for some GPS satellites will not subsist received if they are outside the coverage region of the SBAS tracking network. In this month’s column, they examine the performance of EGNOS in Finland, which lies near the northeast periphery of the EGNOS coverage area, and how this performance can subsist improved now and in the future.
The European Geostationary Navigation Overlay Service (EGNOS) is the first European-operated satellite navigation system and is a precursor to Galileo, Europe’s independent global navigation satellite system (GNSS), now being deployed. EGNOS, as a satellite-based augmentation system (SBAS) similar to the U.S. Wide region Augmentation System (WAAS), was developed with the vision to ameliorate the performance of GNSSs, such as GPS and Galileo. At the moment, EGNOS only augments GPS, making it suitable for safety-critical applications such as flying aircraft or navigating ships through narrow channels.
Additionally, EGNOS besides supports new applications in many different sectors, such as agriculture (for high-precision spraying of fertilizers), transport (enabling automatic road-tolling or pay-per-use insurance schemes) or even precise personal navigation services for universal and specific use.
At present, there are two operational geostationary Earth orbiting (GEO) satellites and until March 2017, these satellites had pseudorandom noise code (PRN) numbers 120 and 136 that simultaneously broadcast EGNOS correction messages to European GPS users. The PRN satellites 120 and 136 are located at 15.5°W and 5.0°E. (Since March, PRN 123 has replaced PRN 136 as one of the operational EGNOS satellites.) The exercise of EGNOS in the northern Europe is much more challenging than elsewhere in Europe due to the relatively low-elevation angle of some EGNOS satellites as seen from there of about 14° or less.
To ameliorate their understanding of the privilege performance of EGNOS in Finnish territory, they recently carried out a project entitled “Finland’s EGNOS Monitoring and Performance Evaluation (FEGNOS).” At the northeastern edge of the EGNOS coverage area, the availability of the EGNOS geostationary satellites is compromised due to their low-elevation angles. The Finnish Geospatial Research Institute (FGI) at the National Land Survey of Finland (NLS) maintains a network of 20 permanent GNSS reference stations (FinnRef) every solitary over Finland. The core objective of the FEGNOS project is to evaluate the performance of EGNOS at every solitary of those reference stations to determine if the EGNOS system performance reaches its target in Finland.
Building on their initial research, in this article they report on the analysis of EGNOS performance at every solitary 20 FinnRef stations for a year-long time-frame from November 2015 until October 2016. As it is of minute to compare the performance of EGNOS in a geographic region where EGNOS satellite visibility can subsist impecunious due to low-elevation angle, they assessed the performance of EGNOS by comparing the receivers’ own decoded SBAS messages against the SBAS messages provided by the EGNOS Data Access Service (EDAS). The daily EDAS SBAS messages can subsist freely downloaded from the EDAS server with prior authentication from EDAS. The performance analysis has been carried out for the following three cases:
We carried out the data analysis using the EGNOS analyzing instrument called PEGASUS (which originally stood for Prototype EGNOS Analysis Using SAPPHIRE, where SAPPHIRE stands for Satellite and Aircraft Database Programme for System Integrity Research) from Eurocontrol. The results complicated that the Rx-decoded EGNOS performance is not as honorable as the performance obtained from the EDAS-offered message corrections. The ongoing sustain and erudition learned from the project has helped to identify weaknesses of the EGNOS system at elevated northern latitudes.FINNISH NATIONAL GNSS NETWORK, FINNREF
The Finnish National GNSS network, FinnRef, was established on the initiative of the Nordic Geodetic Commission and the director generals of the Nordic Mapping Authorities in the 1990s. FinnRef is Part of the Nordic GNSS network, and some stations of the FinnRef network besides contribute to the global International GNSS Service (IGS) network and to the European Permanent Network (EPN). The primary office of FinnRef is to tender geodetic-grade GNSS measurements, which acquire been continuously used for forming and maintaining the national coordinate system (EUREF-FIN). In addition, the FinnRef network is used for many GNSS-related research activities. For example, it is now feasible to resolve the positioning performance of different augmentation services via the FinnRef network. Currently, FinnRef besides offers an open positioning service based on the differential GNSS (DGNSS) corrections for GPS and GLONASS.
The FinnRef network was renewed during the 2012–2013 timeframe. The renewed FinnRef network now consists of 20 GNSS reference stations, as shown in device 1. The raw GNSS data from every solitary 20 reference stations is used in the FEGNOS project for EGNOS performance monitoring and analysis.DATA COLLECTION
EGNOS signal monitoring at every solitary FinnRef stations was carried out for one year from Nov. 4, 2015, until Oct. 31, 2016. There are in total about 360 days of data from the 20 stations out of a feasible 366 days (2016 was a leap year). The day-of-year (DOY) information for the collected data set is detailed in TABLE 1. No data was available during DOY 233 and 234 of 2016 due to a technical frailty at the FinnRef stations. There are 57 days of data from the year 2015 and 303 days of data from 2016.
Each FinnRef station is equipped with a dual-frequency geodetic-grade receiver. Each receiver generates 1-hour binary proprietary data files with a 1-Hz data rate. Data is pushed to the network server and saved at the conclusion of each hour. This means that there are in total 24 data sets for each solitary day for one solitary station. every solitary the stations’ binary data files are then organized under one directory, which is named after DOY for that particular year. The FEGNOS data Collection instrument (FEGCoT) was developed in Matlab to collect data every day automatically from every solitary 20 FinnRef stations.
These three steps are followed for automatic data collection:
The combined 24-hour RINEX data file for each station is then processed using the PEGASUS software. The key configuration parameters used in the data analysis are listed in TABLE 2. (Note that airborne accuracy designator refers to specifications in the WAAS Minimum Operational Performance Standards, MOPS.)
Two PEGASUS modules are used for data analysis:
The altitude cut-off angle and the minimum accepted signal-to-noise ratio are kept low so as to acquire more satellites available for user-position computation. (The European Global Navigation Satellite Systems Agency (GSA) advises that sweep measurements from EGNOS satellites not subsist used for position computation.)
A Matlab-script was written to download EDAS-provided daily SBAS messages automatically from the EDAS server. every solitary the PEGASUS-related processing was besides executed by a Matlab-based script.ANALYSIS OF RESULTS
We analyzed the EGNOS/GPS performance for the above-mentioned cases with the collected year-long data set from the 20 FinnRef stations. The operational time or uptime of each FinnRef station was monitored throughout the FinnRef network nodes on a daily basis. The mediocre uptime of each station for the one-year data set is shown in device 2. The “b” in station names indicates one of the two data streams available from each station. The device shows that most of the stations were up for more than 98% of the time, while only few acquire uptimes close to 95%.
According to EGNOS Open Service (OS) horizontal and vertical accuracy requirements, the 95% Horizontal Navigation System oversight (HNSE) should subsist less than 3 meters, and the 95% vertical Navigation System oversight (VNSE) should subsist less than 4 meters in the EGNOS service provision area. The horizontal and vertical position errors at a defined time epoch are computed as the unlikeness between the estimated navigation position and the actual position in horizontal and vertical planes, respectively. The HNSE (95%) and VNSE (95%) were computed for every solitary FinnRef stations with the year-long data set.
The yearly EGNOS performance in terms of HNSE (95%) and VNSE (95%) are shown in FIGURES 3 and 4, respectively. It can subsist observed that GPS+EGNOS offers significant accuracy improvement compared to GPS stand-alone solutions for every solitary of the stations. vertical accuracy improvement for EGNOS is greater than the horizontal improvement, mostly due to the better mitigation of ionospheric oversight compared to stand-alone GPS. They besides observed that the Rx-decoded EGNOS performance is not as honorable as the performance when corrections are obtained from the EDAS server. This might subsist due to the impecunious visibility of the EGNOS satellites at northeastern latitudes, which resulted in data aging or partial data loss of EGNOS messages.
In FIGURES 5 and 6, the daily EGNOS performance in terms of VNSE (95%) are shown for the two cases: 1) applying EGNOS corrections from EDAS-provided EGNOS messages, and 2) applying EGNOS corrections from Rx-decoded EGNOS messages, respectively.
For a better understanding, the percentage of EGNOS OS requirement failure when analyzed on a daily basis with EDAS offered corrections is presented in device 7.
The percentage of EGNOS OS requirement failure was computed from the number of days where the HNSE (95%) ≥3 meters in the case of horizontal navigation solution oversight and VNSE (95%) ≥ 4 meters in the case of vertical navigation solution error. As observed from Figures 5 and 7, the EDAS offered EGNOS corrections fail to meet the OS requirement only in a few instances. Similarly, the percentage of EGNOS OS requirement failure when analyzed on a daily basis with Rx-decoded corrections is presented in device 8. It can subsist easily seen from Figures 6 and 8 that the Rx-decoded EGNOS performance fails to meet the OS requirement in many instances. However, the daily fluctuations are averaged out when the year-long data is taken into account, providing satisfactory performance on the whole.
The yearly EGNOS performance in terms of VNSE (99%) is shown in device 9.
The three stations with the worst accuracy are highlighted in red in device 1. These stations are located on the northeastern rim of the EGNOS coverage area. The EGNOS User Differential sweep oversight Indicator (UDREI) device for three stations (FINb, VIRb, and SAVb) is shown in device 10(a), 10(b) and 10(c), respectively.
The stations were chosen so that they portray a wide geographical spread over Finland. According to device 10, the satellite UDREI values are in the sweep of 14 and 15 (marked as blue) at the northeastern edge of the sky plot. A UDREI of 14 indicates “not monitored” and 15 indicates “do not use” for a particular satellite. Even though the satellites had a qualify altitude angle with respect to the user, the EGNOS system was unable to tender corrections to those satellites in the northeastern sky. Relatively lower availability of GPS satellites coupled with the lower number of EGNOS Ranging and Integrity Monitoring Stations (RIMS) at northeastern latitudes contributed to the poorer than expected positioning performance in the northeastern coverage region of EGNOS.CONCLUSIONS
In this article, they presented a summary of an analysis of EGNOS in Finland for a year-long period, and they explained their automated data collection and data analysis procedure. The following key observations can subsist made based on the analysis of the year-long data set:
These findings emphasize the fact that there is a mighty necessity at northeastern latitudes for an alternative solution to the GEO satellites broadcasting EGNOS corrections. The existing alternative solution is to download the corrections from the Internet through EDAS at the cost of an additional communication link. The other feasible alternative could subsist to broadcast corrections via inclined geosynchronous orbit satellites, or by some other means.ACKNOWLEDGMENTS
This article is based on the paper “Performance of EGNOS in North-East European Latitudes” presented at the 2017 International Technical Meeting of The Institute of Navigation held Jan. 30–Feb. 1, 2017, in Monterey, California. The research was conducted within the FEGNOS project, funded by the Finnish Transport Agency and the Finnish Geospatial Research Institute at the National Land Survey of Finland. More information about the FEGNOS project can subsist organize at www.fegnos.net.MANUFACTURER
The receivers in the FinnRef network are JAVAD GNSS Inc. Delta-G3Ts and the antennas are JAVAD RingAnt_DMs with SCIS radomes.
MOHAMMAD ZAHIDUL H. BHUIYAN received his Ph.D. degree in 2011 from the Department of Electronics and Communications Engineering, Tampere University of Technology, Finland. He is a research manager in the Department of Navigation and Positioning at the Finnish Geospatial Research Institute (FGI) of the National Land Survey of Finland in Kirkkonummi. He is besides the acting deputy head of the institute’s Satellite and Radio Navigation Research Group.
HEIDI KUUSNIEMI is the director of FGI’s Department of Navigation and Positioning. She is besides an adjunct professor in the Department of Built Environment at Aalto University in Espoo and in the Department of Electronics and Communications Engineering at Tampere University of Technology. She is besides the current president of the Nordic Institute of Navigation. She received her M.Sc. and D.Sc.(Tech.) degrees from Tampere University of Technology in 2002 and 2005, respectively.
AURYN SODERINI is an M.Sc. student in the Department of Electronics and Communication Engineering at Tampere University of Technology. He received his B.Sc. in 2012 from the Department of Electronics Engineering at The Third University of Rome.
SALOMON HONKALA is a researcher at FGI. He holds an M.Sc. (Tech.) degree in electrical engineering from Aalto University.
SIMO MARILA is a research scientist in FGI’s Department of Geodesy and Geodynamics. He received an M.Sc. degree in 2011 from Aalto University.FURTHER READING
• Authors’ Conference Paper
“Performance of EGNOS in North-East European Latitudes” by M.Z.H. Bhuiyan, H. Kuusniemi, A. Soderini, S. Honkala and S. Marila in Proceedings of the 2017 International Technical Meeting of The Institute of Navigation, Monterey, California, Jan. 30–Feb. 1, 2017, pp. 627–636.
• Authors’ Related Work
“Performance Comparison of Differential GNSS, EGNOS and SDCM in Different User Scenarios in Finland” by S. Marila, M.Z.H. Bhuiyan, J. Kuokkanen, H. Koivula and H. Kuusniemi in Proceedings of ENC 2016, European Navigation Conference 2016, Helsinki, Finland, May 30–June 2, 2016, doi: 10.1109/EURONAV.2016.7530550.
“Low-Cost Precise Positioning Using a National GNSS Network” by M. Kirkko-Jaakkola, S. Söderholm, S. Honkala, H. Koivula, S. Nyberg and H. Kuusniemi in Proceedings of ION GNSS+ 2015, the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation, Tampa, Florida, Sept. 14–18, 2015, pp. 2570-2577.
“Finnish Permanent GNSS Network: From Dual-frequency GPS to Multi-satellite GNSS” by H. Koivula, J. Kuokkanen, S. Marila, T. Tenhunen, P. Häkli, U. Kallio, S. Nyberg and M. Poutanen, in Proceedings of UPINLBS 2012, the 2nd International Conference and Exhibition on Ubiquitous Positioning, Indoor Navigation and Location-Based Service, Helsinki, Finland, Oct. 3–4, 2012, doi: 10.1109/UPINLBS.2012.6409771.
• European Geostationary Navigation Overlay Service
EGNOS Safety of Life (SoL) Service Definition Document, Version 3.1, European GNSS Agency, Prague, Sept. 26, 2016.
EGNOS Open Service (OS) Service Definition Document, Version 2.2, European GNSS Agency, Prague, Feb. 12, 2015.
“The Future is Now: GPS + GLONASS + SBAS = GNSS” by L. Wanninger in GPS World, Vol. 19, No. 7, July 2008, pp. 42–48.
EGNOS – the European Geostationary Navigation Overlay System – A Cornerstone of Galileo, edited by J. Ventura-Traveset and D. Flament, ESA SP-1303, European Space Agency, Noordwijk, The Netherlands, 2006.
• EGNOS Data Access Service
“EDAS (EGNOS Data Access Service): Differential GNSS Corrections for Land Applications” by J. Vázquez, E. Lacarra, M.A. Sánchez and Pedro Gómez in Proceedings of ION GNSS+ 2016, the 29th International Technical Meeting of the Satellite Division of The Institute of Navigation, Portland, Oregon, Sept. 12–16, 2016, pp. 3550–3561.
EGNOS Data Access Service (EDAS) Service Definition Document, Version 2.1, European GNSS Agency, Prague, Dec. 19, 2014.
EGNOS Data Access Service (EDAS) website.
• Finland’s EGNOS Monitoring and Performance Evaluation
• PEGASUS EGNOS Analyzing Tool
PEGASUS Software User Manual, PEG-SUM-01, Issue M, Eurocontrol, Brussels, Jan. 16, 2004.
• Satellite-Based Augmentation Systems
“Satellite Based Augmentation Systems” by T. Walter, Chapter 12 in Springer Handbook of Global Navigation Satellite Systems, edited by P.J.G. Teunissen and O. Montenbruck, published by Springer International Publishing AG, Cham, Switzerland, 2017.
Minimum Operational Performance Standards for Global Positioning/Satellite-Based Augmentation System Airborne Equipment, RTCA/DO-229E, prepared by SC-159, RTCA Inc., Washington, D.C., Dec. 15, 2016.
As businesses hunt to migrate to IP-based telephony solutions, introductions of unadulterated IP and converged systems are on the rise, according to the latest research. Database publisher and analyst group TelecomTactics finds that unadulterated IP systems and converged systems portray a combined 70 percent of new system introductions in 2004 compared to only 35 percent in 2000. Traditional telephone systems that can subsist IP-enabled or those with no champion for VoIP are on the decline.
Businesses are moving to capture handicap of IP-based solutions, but protection of their current gear investment remains a priority. The goal is to avoid elevated costs by retaining and reusing existing line and station cards and telephones on a new IP system. Converged systems that champion both packet and circuit switching are a honorable suitable since these systems accommodate connection to analog and digital telephones, as well as newer IP devices. In 2002, the enterprise telephony market experienced a surge in introductions of converged systems by Avaya, Mitel Networks, NEC, Siemens and other manufacturers.
Pure IP platforms utilize IP peer-to-peer switching, connecting stations directly to each other through the IP network, but can incorporate optional gateways or interfaces for traditional analog and digital connections.
IP networking benefits businesses with distributed locations and makes it more cost-effective to include petite fork offices in a network. In 2004, a number of manufacturers introduced unadulterated IP platforms, including 3Com, Comdial and Toshiba with petite and mid-sized offerings, and Cisco, NEC and Nortel Networks with platforms for larger enterprises (see system profiles).
Businesses benefit from new IP-based employee productivity applications, including instant messaging, presence, IP audio and video conferencing and collaboration. Collaborative applications succor to reduce travel and facilitate communication among dispersed workgroups, allowing employees to easily share information from any location on a corporate network. Web-based conferencing lets conferees record presentations and exercise white-boarding or engage in face-to- mug video calls. Presence-based communication improves employee and customer interactions, allowing users to define how they wish to subsist reached (via desk phone, cell phone, e-mail, instant messaging or other media). New sophisticated, IP-based contact seat functionality adds agent/supervisor instant messaging, collaborative Web browsing, e-mail automated response, live Web chat and multimedia queuing/routing to title a few.
Further studies complicated that champion for IP telephones on commerce telephony platforms continues to surge from only 20 percent in 1999 to more than 80 percent in 2004. Leading manufacturers are rounding out their IP phone portfolios, offering a sweep of choices from cost-effective, entry-level and mid-range phones to advanced models. By transmitting voice over a companys data network, IP telephones can reduce costs and easily extend office telephone features to a remote location such as a home or fork office. Corporate directory access, call-history logging, conversation record, great pixel-based displays, color touch-screens and even interoperability with a PDA are among the many well-liked IP telephone features.
Sandra M. Gustavsen is an analyst covering enterprise systems for TelecomTactics, a database publisher and analyst group within Access Intelligence LLC. Visit www.telecomtactics.com or www.telecomweb.com/enterprise.
SMALL commerce SYSTEMS
3Com NBX V3000
3Com Corp’s NBX V3000
3Com Corp’s new NBX V3000 is an IP PBX platform for petite offices or petite and medium businesses. The modular NBX V3000 targets businesses with two to 40 users, but can expand to champion as many as 1,500 stations using the SuperStack 3 NBX expansion chassis. The NBX V3000 unit includes four CO line ports; one analog station port; 15 ‘Group 2’ phone licenses for 3Com 3102 IP phones; a four-port auto attendant; voice mail capability with 400 storage hours; and the NBX NetSet utility for browser-based administration. This unadulterated IP solution for petite businesses delivers IP features and functionality at a key system price, according to 3Com.
Like 3Com’s earlier NBX platforms, the NBX V3000 voice-over- LAN solution includes auto attendant, voice mail, convene detail recording, TAPI software and browser-based Web administration - a cost savings over typical PBX systems that require external equipment. The initial NBX V3000 system has 128MB memory, supporting up to 250 devices, eight Virtual Tie Lines and 12 auto attendant/voice mail ports. A 512MB reminiscence upgrade (for a system total of 640MB) increases capacity to 1,500 devices, 48 Virtual Tie Lines and 72 auto attendant/voice mail ports. The SuperStack 3 NBX expansion chassis and interface cards enable the system to ply T1/PRI trunking and additional CO lines up to a 720-trunk capacity. The expanded NBX V3000 has the identical capacities as the SuperStack 3 NBX, but does not champion optional redundant disk mirroring or redundant power.
The 3Com NBX V3000 is compatible with every solitary 3Com interface boards, gateways, 3Com phones and NBX software applications, providing investment protection for NBX customers. www.3com.com
Alcatel’s OmniPCX Office
Alcatel’s OmniPCX Office ‘all-in-one’ converged platform for smaller businesses (six to 236 users) supports both packet and circuit switching and includes Internet access, an e-mail server, network security, LAN and WAN interfaces, and a host of applications, such as voice mail, unified messaging and in-building wireless capabilities - every solitary in a solitary system, eliminating the necessity for multiple components. The OmniPCX Office modular architecture expands by adding modules (up to three), interface boards and telephones.
The convene server includes a two- to eight-port voice mail capability with 200 storage hours and two-level/10- election auto attendant, and an embedded e-mail server lets users ply text and voice messages via a PC or telephone (up to 200 e-mail boxes and 200 voice mailboxes are available). The Alcatel Web Communication second besides can subsist used to access e-mails and voice messages using a Web browser. System administration is simplified by a solitary centralized, user-friendly Webbased management instrument that does not require software installation, and up to 50 sites can subsist networked via the public Internet.
Users acquire a sweep of telephone options, including Alcatel Reflexes digital phones, Mobile Reflexes handsets, analog phones, IP e-Reflexes desk sets and IP PIMphony media soft phones. The OmniPCX PIMphony CTI application enables PC-based convene management, including convene hold, multiline management, dial by name, redial, screen pops from contact database, convene log and unified messaging. The addition of an IP phone module creates a full IP PIMphony media softphone.
Alcatel launched OmniPCX Office in the European petite commerce market in 2001 and introduced the platform in North America in fourth quarter 2004 to subsist sold through service providers as a bundled managed services offering. www.alcatel.com
Comdial CONVERSip MP1000
ComDial Corp.’s CONVERSip MP1000 Media Platform
Comdial Corp.’s CONVERSip MP1000 Media Platform is an affordable IP telephony solution for petite or fork offices. The new system combines telephony, computer and Internet technologies and the open-standard SIP. The embedded SIP registrar acts as a presence manager to panoply presence status of other subscribers in the system (similar to having a assiduous lamp domain on a telephone, but with additional text information).
Browser-based local or remote administration simplifies system management, and the solitary platform integrates a LAN interface, auto attendant, unified messaging and administration. The CONVERSip MP1000 supports four to 40 users with a restrict of eight PSTN trunks for outbound calls; however, the system handles up to 100 simultaneous peer-to-peer calls.
The CONVERSip MP1000 LAN-only solution supports the new CONVERSip EP200 Multimedia Endpoint (softphone) that uses Microsoft Windows XP technology for video, voice and instant messaging, as well as the CONVERSip EP300 Voice SIP desktop phone with 24 programmable buttons. www.comdial.com
MEDIUM commerce SYSTEMS
Avaya IP Office 3.0
Avaya IP Office Version 2.1
Avaya Inc.’s IP Office is an ‘all-in-one’ converged system for solitary or multisite businesses that necessity criterion PBX features, analog and digital trunking, plus champion for IP telephones. IP Office delivers Internet access, remote access, integrated LAN hub, T1/E1/PRI/analog trunking and champion for open standards such as QSIG and H.323.
New Release 3.0 software adds additional installation tools (Wizards), SNMP alarms and the Avaya Jump Start – IP Office Installation Toolkit to simplify installation and maintenance for Avaya certified commerce partners. Avaya besides will add new IP Office phones, the 5400 and 5600 series, designed specifically for IP Office, as well as increased extension and trunk capacity on the IP Office 406.
The new software builds upon features introduced in second quarter 2004 (Release 2.1), including IP Office Conferencing seat Web-based software.
A global offer, the current IP Office family includes the IP Office – petite Office Edition (28 users), IP403 Office (100 users), IP406 Office (180 users) and IP412 Office (360 users). Several applications approach criterion with the IP Office, including Voice Mail Lite, PhoneManager Lite (PC-based convene management) and CTI Link Lite. Optional enhanced versions of these applications besides are available, as well as optional Compact Contact seat and Compact commerce seat applications for basic convene seat functionality, plus advanced features such as e-mail response, Web chat, Web callback.
IP Office 3.0 was set to subsist generally available in December 2004 in North America and many countries in Europe, the Asia-Pacific region and Latin America, according to Avaya. www.avaya.com
Mitel Networks 3300 ICP 5.0
Mitel Networks’ 3300 ICP Release 5
Mitel Networks Release 5.0 for its 3300 Integrated Communications Platform (ICP) includes new and improved hardware and additional networking and messaging features, as well as a cost-effective IP phone, new dual-mode IP phones and IP DECT phones. The 3300 ICP is an enterprise IP PBX that operates across a LAN/WAN infrastructure to provide more than 500 calling features and a sweep of embedded applications including voice mail, auto attendant, ACD and an 802.11b wireless gateway.
A new five-slot 3300 MX Controller for fork offices with up to 200 users features an integrated analog board that eliminates the necessity for divorce Analog Service Units. An eight-slot 3300 LX Controller for up to 700 users ships with a 450MHz processor and can subsist configured flexibly with optional expansion modules. Up to 250 controllers can subsist networked to champion more than 40,000 IP ports.
In addition to built-in voice mail software, release 5.0 adds criterion unified messaging features for forwarding voice mail and recorded calls (option) to e-mail, and users can pick up voice mail from the e-mail inbox.
Release 5.0 besides adds an embedded recorded announcement capability that plays recorded greetings through a voice mail port and eliminates the necessity for external tape machines or other devices. New networked voice mail provides voice mail service to a network of 3,300 ICP nodes or between a 3300 ICP and a VPIM2-compliant voice mail server. Networked resilient pungent desking lets users log into any IP phone in any networked location; personal profile information is mapped onto the phone. www.mitel.com
Toshiba Strata CIX
Toshiba Strata CIX
Toshiba America Information Systems Inc. Digital Solutions Division (TAIS DSD) announced in tumble 2004 the new Strata CIX indigenous IP commerce communications system. Designed for businesses of varying sizes, the 672-port CIX can subsist deployed in petite or medium enterprises or larger businesses with multiple sites. Strata CIX is a unadulterated IP platform that can subsist TDM-enabled to integrate with station and trunk interfaces from earlier Strata CTX and Strata DK digital systems. Customers with earlier Toshiba systems can migrate nearly 90 percent of their original equipment. In addition to delivering traditional Toshiba telephone features, Strata CIX besides enables new features, including ‘My Phone Manager,’ a personal administration instrument that lets users program precipitate dial and feature buttons using a PC Web browser and eManager for programming both Strata CIX and Stratagy ES Voice Processing systems.
FeatureFlex, an optional application for Strata CIX, lets users customize features to meet company, department or individual user needs. System resources and a built-in scripting language are available for creating new applications that achieve not impress the system’s compiled code. Enterprises no longer acquire to wait for the manufacturer to gain system enhancements, but can enable their own customized solutions in minutes such as integrating back-office systems, connecting to online sources or setting up special convene handling.
Users will savor the identical telephony features whether they are using Toshiba analog, digital or IP-wired or wireless devices. New IP devices for Strata CIX and CTX systems include IPT2010-DS and IPT2020-DS desktop IP phones (introduced in September 2004) with a modern design, two-line displays and full duplex speaker phone functionality. A new Strata Wireless IP Telephone (WIPT2000) works over a wireless LAN, providing IPT2010 desk IP phone features to a mobile device with a great display, four soft keys, seven fixed buttons, 10 programmable buttons, caller ID log and more.
The new SoftIPT SoftPhone operates on PDAs running PocketPC 2003, laptops, tablet PCs and PCs running Windows 2000 or XP. For mobile employees, these new telephone options tender access to every solitary Toshiba telephone features from any location. www.toshiba.com
LARGE commerce SYSTEMS
NEC Unified Solutions UNIVERGE SV7000 Telephony Server
NEC’s UNIVERGE SV7000
NEC Unified Solution’s new SIP-enabled client server, or UNIVERGE SV7000 Telephony Server, integrates VoIP, data and video into a solitary network and enables more than 750 voice features based on NEC’s NEAX 2400 IPX feature set. As a unadulterated IP system, SV7000 supports IP-enabled connections and IP peer-to-peer switching, connecting stations directly to each other through the IP network. Voice signals travel through the IP network, but achieve not utilize the switch as in traditional telephony.
UNIVERGE SV7000 is comprised of the SV7000 T server for features and functions associated with traditional telephony components and the SV7000 S as the signaling server between the SV7000 system and SIP or unadulterated IP devices.With the latest version of software, the system supports 4,000 IP ports, 4,000 time slots and 4,000 IP clients. An additional 1,536 TDM ports can subsist added via optional Port Interface Racks (PIRs). PIRs champion traditional analog and digital connections but besides can champion various trunking, wireless LAN and other TDM connections.
The SV7000 groundwork package includes the SIP-enabled server, ISDN Media Gateway for local and long-distance, 25 NEC Dterm IP phone client licenses, five soft-phone terminal licenses, a 2-port expandable Unified Messaging System with 25 unified messaging client licenses (expandable to 16 ports and 32 ports in the future), a conferencing server with digital announcement and Music On Hold, 25 desktop productivity licenses and NEC’s MA4000 Management bundle (for 25 extensions). www.necunifiedsolutions.com
Nortel Networks Communication Server 1000 Release 4.0
Nortel Networks’ Communications Server 1000E
Nortel Networks Communication Server 1000 (formerly Succession 1000) Release 4.0 is a full-featured IP PBX with a broad sweep of commerce applications and more than 650 telephony features. CS 1000 uses packet switching for both voice and data traffic over a LAN or WAN, and adds connection to TDM-based networks such as the PSTN via analog and digital trunks. Each of the three CS 1000 scalable models includes the CS 1000 convene server, a signaling server and enterprise media gateways.
CS 1000E, a new offering, targets great customers that crave a full IP PBX solution and necessity full convene processor redundancy. The 19-inch rack-mount system is optimized for IP telephones (up to 15,000), but besides supports digital and analog phones (up to 3,000). In addition to Geographic Redundancy and Load Sharing configurations, CS 1000E besides supports Campus Redundancy with convene server deployment throughout a campus using a elevated precipitate data link between servers up to 25 miles apart.
Release 4.0 adds new solutions that enable a geographically dispersed workforce to collaborate in existent time. CS 1000 supports SIP-based integration to Nortel Networks Multimedia Communication Server (MCS) 5100 for multimedia and collaborative applications such as video conferencing and calling, picture caller ID, white boarding, file exchange, co-Web browsing, convene screening, convene logs, presence and instant messaging.
Release 4.0 besides improves Nortel’s current line of IP telephones (IP Phone 2002 and 2004 angle II) and introduces the Mobile Voice Client 2050, a Pocket PC-based client that operates on a PDA. besides new is the IP Phone 2006 with 4.5-inch diagonal panoply (grayscale), three-port switch, full duplex speakerphone and LAN power options and the new IP Phone 2007 with 5.7-inch color display. IP Phones 2006 and 2007 and an IP Audio Conference Phone will become generally available in the first quarter of 2005. www.nortelnetworks.com
Tadiran Telecom’s Coral IPx
Tadiran Telecom’s Coral IPx 4000
Tadiran Telecom’s Coral IPx systems meet the needs of small, medium or great businesses and can subsist used as a traditional switch, a VoIP telephony server or both. Four models include the space-saving Coral IPx 500, the mid-sized IPx 800, the fully scalable IPx 3000 and the IPx 4000 for great enterprises with critical, high-traffic operations.
The Coral IPx 4000 meets the needs of mid- to large-sized businesses with high-traffic/high-performance requirements using a 64-bit processor for higher traffic situations (250,000 BHCA). This non-blocking system has a hot-standby dual-control option, including two complete sets of control hardware, each able to fully and independently control the operations of the entire system. Modular 19-inch expansion shelves are used to house VoIP gateways or traditional TDM interface cards. A fully configured IPx 4000 supports up to 4,224 wired ports.
All Coral IPx models can capture handicap of the universal gateway and the media gateway card for trunk- and station-side IP telephony, and remote users will savor full Coral functionality using the Coral FlexSet-IP telephone. ACD is a criterion feature for distributing incoming calls among 250 energetic agents in multiple groups. For voice mail and unified messaging, Coral IPx supports the unified Coral Message seat with four to 64 ports for voice, e-mail and fax messaging, or customers can select the four- to 24-port uCMC (unified Coral Message Center) card that besides handles every solitary message types. QSIG networking over IP, frame relay or ISDN among Coral systems is a criterion feature.
Sprint resells every solitary versions of the Coral IPx as the Sprint IPx Converged PBX available from Sprint Authorized Dealers.www.tadiranamerica.com
Need up-to-date information on available enterprise telephony systems and their features and pricing? Want to compare other vendors against yours? Check out TelecomTactics at www.telecomtactics.com. It offers an interactive Web-based sales instrument featuring detailed feature/function-based comparisons of enterprise communications gear and applications in a side-by-side report format. Product categories covered include IP PBX, PBX, key systems, IP telephony gateways and telephones, voice and unified messaging, contact centers and ACD, computer telephony integration, in-building wireless and hospitality systems.
Call +1 800 678 4642 for an introductory subscription offer.
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