GL Announces Enhanced Bit Error Rate Testing Application Over ATM Layer

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GL Communications Inc. announced today its enhanced T1 E1 ATM Bit Error Rate application.

T1 E1 ATM Bit Error Rate Testing

GL’s T1 E1 ATM Bit Error Rate Test (BERT) application permits BER testing across an ATM channel operating over PDH circuits.

GL Communications Inc. a leader in providing PC-based test, analysis and simulation products and consulting services to the worldwide telecommunications industry, announced today its enhanced T1 E1 ATM Bit Error Rate application.

Speaking to media persons, Mr. Vijay Kulkarni CEO of the company said, "GL’s T1 E1 ATM Bit Error Rate Test (BERT) application permits BER testing across an ATM channel operating over PDH circuits. The application transmits a BERT pattern using the simplest ATM Adaptation Layer, i.e. AAL0. The BERT pattern is inserted in its entirety into the 48 byte payload of the cell. Cells are either “BERT payload” or “idle” cells. Note that “cell headers” and payload can overlap the framing position."

He added, "In contrast to traditional BERT, ATM BERT is done at the ATM layer and can be performed all of the way across the virtual circuit to the far-end customer-premise site. Often, user traffic may be routed through several CO sites before reaching the first ATM edge switch. Each of these additional routes adds to the potential for errors. Traditional BERTs may only verify the local loop to the first CO and neglect to verify the connections between the intermediate COs. Thus ATM BERT allows for end-to-end verification of the circuit’s reliability."

Mr. Kulkarni further added, "The application allows traffic generation and verification, bit error insertion, looping back incoming traffic, and configuring ATM header fields such as virtual path and circuit identifier values, GFC, PT, and CLP for UNI & NNI interfaces. The ATM BERT application is capable of testing Pseudo Random Bit Sequence (PRBS) patterns, fixed patterns like all ones, all zeroes, alternate ones & zeroes, 1:1, 1:7, and user-defined bit patterns. In addition, single bit error insertion rate, error insertion from 10-2 to 10-9, invert, and scrambling options are provided for payload."

Important Features

·Capable of generating/receiving ATM traffic
·Support user-defined ATM header configuration for GFC, VPI, VCI, PT, CLP
·User-defined traffic rate to the accuracy of 1% of total bandwidth.
·Supports different QRSS, PRBS patterns 29-1, 211-1, 215-1, 220-1, 223-1, All one’s, All zero’s, alternate 1’s and 0’s, 1:1, 1:7, & User-defined patterns. User defined patterns length can be 3 to 32 bits in length.
·Supports inverting, and scrambling payload data. Scrambling is according to ITU-T G.804
·Supports single bit error insertion, and error rate insertion.
·Provides ATM QoS measurement (Bit error count/ Rate/Seconds, Sync Loss, No Rx data,… )
·Provides ATM Statistics (total cell count, rejected / pass / idle cell counts, cell rate, and HEC error count).
·Error and Alarm LEDs for easy analysis.
·Supports testing on multiple cards simultaneously with consolidated result view.
·Tx and Rx settings for multiple cards can be independently controlled or coupled.
·Capability to save and load the configuration settings.

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 Communications has over the years worked with major telecom equipment vendors (EVs) and system integrators to meet the testing requirements arising at various stages of telecommunications product development life cycle.

With its proven expertise of over 25 years, GL has a comprehensive suite of telecom testing solutions to verify and ensure 'quality and reliability' of variety of telecom networks including Wireless, and high-speed fiber optic lines.

GL's test tools range from simple PC-based software test tool to all-encompassing hardware units with futuristic expansion capabilities. GL's test solutions cover wide array of networks – 4G (LTE), 3G, IP, Ethernet, T1, T3, E1, E3, OC-3/STM-1, OC-12/STM-4, and traditional PSTN networks.

GL's tools are widely used by the telecommunication industry for conformance testing, automated stress/load testing, performance testing, remote accessibility, centralized web-based control and analysis, fault testing and analysis, and customized testing.

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