Multi-Link Frame Relay Emulation over T1 E1

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GL Communications Inc conveyed today the availability of its product Multi-Link Frame Relay Emulator.

Multi-Link Frame Relay Emulator

Multi-Link Frame Relay, or MFR, is similar to Multi-Link PPP, and both are a form of inverse multiplexing.

GL Communications Inc. a leader in providing PC-based test, analysis and simulation products and consulting services to the worldwide telecommunications industry, conveyed today the availability of its product Multi-Link Frame Relay Emulator.

Speaking to media persons, Mr. Vijay Kulkarni CEO of the company said, ” Multi-Link Frame Relay, or MFR, is similar to Multi-Link PPP, and both are a form of inverse multiplexing. Users rely on inverse multiplexing when access line capacity does not scale smoothly, i.e. notice the big jumps in bandwidth from 56kbps, 1.544 Mbps, and 45 Mbps. In such cases, intermediate bandwidth must be derived by aggregating a number of smaller access lines into larger ones.”

He added, “MFR is used to derive a larger frame relay pipe by aggregating smaller frame relay pipes. For example, 5 T1 frame relay pipes could be bundled to appear as a single 7.5 Mbps frame relay pipe. Some of the advantages of using MFR are: better bandwidth sizing according to customer traffic requirements and potentially better QOS by minimizing delay.”

Mr. Kulkarni further explained, “MFR works by bundling multiple T1 circuits into a multilink bundle and fragmenting the individual frame relay frames into fragments. These fragments are then transported in parallel over the multiple T1 circuits. At the other end, the fragments are reassembled into the original frame relay frames. The protocol includes the use of sequence numbers to allow the fragments to be reassembled correctly and to ensure that the reconstructed frames are sent out in the original order in which they entered the network.”

He added, “FR and MFR can be emulated and analyzed using GL’s client-server based MFR Emulation and FR Analysis software modules. MFR is an optional application for GL’s Card and USB based T1 E1 platforms.”

Some of the Important Features:

·Adheres to FRF.12 and FRF.15 standards
·Support two simulation modes - FR and MFR
·Add Frame Relay links to MFR bundle
·Activate and deactivate Frame Relay links (streams) dynamically
·Create and delete Virtual Channels on FR links/MFR bundle
·Generate and verify end to end traffic on each Virtual Channel
·Supports both Interface (UNI and NNI) and End-to-End fragmentation
·Supports various traffic source/sink types namely, Sequence Number, Binary File, Hex String and HDL file
·Create and delete Aggregated Virtual Channels
·Supports various Byte and Frame level Impairments
·Provides detailed statistics for FR link/MFR bundle and each Virtual Channel

About GL Communications Inc.,

Founded in 1986, GL Communications Inc. is a leading supplier of test, monitoring, and analysis equipment for TDM, Wireless, IP and VoIP networks. Unlike conventional test equipment, GL's test platforms provide visualization, capture, storage, and convenient features like portability, remotability, and scripting.

GL’s TDM Analysis & Emulation line of products includes T1, E1, T3, E3, OC-3, OC-12, STM-1, STM-4, analog four-wire, and analog two-wire interface cards, external portable pods, and complete system solutions. Capabilities include voiceband traffic analysis and emulation across all traffic types (voice, digits, tones, fax, modem), all protocols (ISDN, SS7, GR-303, Frame Relay, HDLC, V5.X, ATM, GSM, GPRS, LTE, etc.), and with capacities up to thousands of channels. Our newest products provide astonishing capacity and capture capability up to and including gigabit speeds.

GL’s VoIP and IP products generate / analyze thousands of calls and traffic simultaneously with traffic types such as frames, packets, voice files, digits, video, tones, noise, and fax. Almost all codecs are supported including G.711, G.729, AMR, EVRC-A,B,C, GSM, iSAC, and many more. Additional features include visual analysis, real-time listening, and recording. The product line also includes Ethernet / IP Testing capability that simulates and checks frame transport and throughput parameters of Ethernet and IP networks, including delay, errors and other impairments.

GL's Voice Quality Testing (VQT) product line complements all of GL's products. Using ITU-standard algorithms (PAMS, PSQM, and PESQ), GL's VQT provides a widely accepted solution for assessing voice quality in the telecom industry. Voice Quality Testing across multiple networks (T1, E1, T3, E3, OC-3, OC-12, VoIP, Wireless, and Landline) is available.

GL’s Wireless Products perform protocol analysis and voice quality assessment on GSM, CDMA, UMTS, and LTE networks. Connections can be made to any wireless phone with automated call control, GPS mapping and real-time signal measurements.

GL’s Echo Canceller testing solutions provide the broadest range of simulation and analysis, including line and acoustic echo. GL’s compliance testing per G.168. G.167 and P.340 across TDM, IP, VoIP and Wireless networks is widely accepted in the industry.

GL’s wireless VQT solutions help assessing impairments to voice quality such as poor mobile phone quality, voice compression and decompression algorithms, delay, loss and gain in speech levels, noise, acoustic and landline echo, and other distortions are easily assessed and accurately measured.

GL’s Handheld data testers can test a wide variety of communications facilities and equipment including T1, fractional T1, E1, fractional E1, T3 and E3 modems, multiplexers, CSU, DSUs, T1 CSUs, DTUs, NTUs and TIUs and more. The testers provide convenience, economy, and portability for almost any interface, including RS232, RS-422, RS-530, X.21, T1, E1, T3, E3, and many others.

GL’s Network Surveillance and Monitoring products include Probes for TDM, IP, VoIP, ATM, and Wireless networks. An open standards based approach provides a scalable, feature rich, real-time access to network characteristics. Centralized or distributed access, efficient transport and database loading allow compatibility with 3rd party and standards based monitoring systems.


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