GL conveys the availability of its HDLC Transmit Receive Application over T3 E3

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GL Communications Inc. conveyed today the availability of its product HDLC Transmit Receive application over T3 E3.

HDLC Transmit Receive Appplication

USB T3 E3 HDLC Test Application is designed to transmit and receive HDLC frames over unstructured T3 E3. It generates frames in memory and fills them with 64 bit sequential integer numbers

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 HDLC Transmit Receive application over T3 E3.

Speaking to the press, Mr. Vijay Kulkarni CEO of the company said, “USB T3 E3 HDLC Test Optional Application is designed to transmit and receive HDLC frames over unstructured T3 E3. It generates frames in memory and fills them with 64 bit sequential integer numbers. The number is either truncated if the frame length is less than 8 bytes or the same number bytes are concatenated to make up the complete frame.”

He added, “Three types of frame length sequences are supported: Fixed length, Variable length with framed data length is incremented from the minimum value to the maximum value by one and after maximum length is reached the minimum length is transmitted, Random length in the minimum – maximum range. User can specify the number of flags between frames to vary the data utilization.”

Mr.Kulkarni further added, “The receiving part receives the frames and verifies if the received frames conform to the specified pattern data sequence and frame length. The following errors are counted:

·Frame errors – HDLC zero bit insertion/deletion error that are constituted by non-integral number of octets between flags
·Length errors – frame length is different from expected
·CRC errors – FCS errors
·Sequence errors – sequential 64 bit integer numbers places in the frame are out of sequence.

Higher-level protocol headers can be specified by user and prepended to frames.
Multiple instances of the application can run simultaneously for different ports. Each instance can be: Receive and transmit, Receive only, Transmit only.”

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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