GL Conveys the Availability of Fully Automated EC Compliance Testing Solutions Per ITU G.168

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GL Communications Inc. conveyed today the availability of the Fully Automated Echo Compliance Testing Solutions per ITU G.168 software. .

WCS (Windows Client Server) software to transmit/receive files and to simulate the echoes in real time.

Auto EC Test Software is an application used to perform echo cancellation compliance testing automatically per ITU G.168 specification.

Gaithersburg, Maryland, USA -January 02, 2012- 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 the Fully Automated Echo Compliance Testing Solutions per ITU G.168 software.

Speaking to media persons, Mr. Vijay Kulkarni CEO of the company said, ”Auto EC Test Software is an application used to perform echo cancellation compliance testing automatically per ITU G.168 specification. ITU G.168 spec refers to characteristics of Line Echo Cancellers (LEC). Line Echo Cancellers are either high-density standalone devices, i.e. many T1s or E1s in a landline network. Or they may be embedded in Gateways (between an IP and TDM networks or between Wireless and TDM networks).”

He added, “AutoECTest uses GL’s T1 E1 hardware platforms and can be used in TDM, Wireless, and VoIP configurations. Some typical scenarios are discussed below:

Landline-to-Landline – In such calling scenarios, two LECs are involved in each call. Each LEC cancels echo at its “tail circuit”. It is possible that the delay in each tail circuit could be as great as 128 ms.

Wireless to Landline – Only one tail is involved in wireless to landline calls, and therefore only one LEC is required at the landline end.

VoIP to Landline – Only one tail is involved in VoIP to landline calls. The LEC is usually in a Gateway.

Auto EC Test Viewer supplements AutoEC Test software using which the EC test results are analyzed and graphically viewed.”

Mr.Kulkarni further added, “The Auto EC Test Software uses GL’s T1 E1 Analyzer products and the customers LEC hardware to perform Automated Echo Canceller testing in accordance with ITU-T Specifications G.168. In the last 10 to 12 years, ITU G.168 has under gone many revisions with greater and greater detail and specificity and it has been updated accordingly.”

He further added, “Rin and Sin files (stimulus and echo) are prepared and generated in real-time by Auto EC Test software in accordance with user inputs. There are two solutions for different scenarios. The first Solution uses WCS (Windows Client Server) software to transmit/receive files and to simulate the echoes in real time. The second solution is designed for special applications where the LEC is still in development form, i.e. software only. Also, no GL hardware is required, as everything is file based. The first and second scenarios shown diagrammatically”

Important Features:

·Simulation of echo path with various delay, attenuation, hybrid filters, noise level, etc.
·Real-time as well as off-line analysis with tabular Pass/Fail results
·Auto or Manual control of the EC during testing
·Auto analysis of the response according to G.168 (2000/2002/2004/2007/2009) requirement
·Detailed graphical and tabular results for individual and overall test
·Option to zoom-in on any test results to investigate further
·Simulates long haul delay
·MS-Windows OS (WIN 2000 or XP) with User-Friendly Graphical User Interface
·Compatible with GL's T1/E1 HD Cards and USB portable T1/E1 units

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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