Gaithersburg, Maryland (PRWEB) October 09, 2012
Gaithersburg, Maryland, USA -October 08, 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 its Acoustic Echo Compliance Test Software per G.167 and P.340 standards.
Speaking to media persons, Mr. Robert Bichefsky Senior Manager of Product Development of the company said, ” Acoustic echo is a common phenomenon that is encountered in many types of phone calls. It occurs when speaker output is fed back to the microphone input. This will disturb the far end speaker as they hear their own voice but delayed. Acoustic echo cancellers (AEC) are used in phones or in the network to minimize this distortion. Acoustic echo, unlike line echo, is dynamic during a call as people and speakers move about.”
He added, ” GL's Automated Acoustic Echo Cancellation (AEC) Compliance Test Software is a feature rich application used to perform acoustic echo cancellation testing in accordance with ITU-T Specifications, G.167 and P.340. The Software uses GL Communications' T1 E1 Analyzer products and the customers’ AEC hardware or software to perform Acoustic Echo Canceller testing. Rin and Sin files (stimulus and echo) are prepared by Automated AEC Test software in accordance with user inputs. Rout and Sout are captured and processed.”
Mr. Bichefsky further added, “Automated Acoustic Echo Cancellation (AEC) test software works in conjunction with our T1 E1 product platforms, including USB T1 E1 Analyzer and Universal T1 E1 Cards. Automated AEC Test Software performs a full analysis (with detailed displays) that results in a "Pass" or "Fail”. Automated AEC testing concepts are implemented within the software for various End to End Applications (Mobile, TDM, and VoIP) scenarios.”
·Simulates an actual acoustic echo path with acoustic filter types (Small, Medium, Large Office), Echo path delays and losses.
·Features such as filter, attenuate, and delay are available as well as slow filter coefficient variation as a function of time to simulate a real acoustic environment.
·Real-time as well as off-line analysis with tabular Pass/Fail results.
·Simulate acoustic echo for Analog (Mobile Phone), digital (Gateway), and Packet (VoIP IP Phone) applications.
·Auto or Manual control of the AEC during testing.
·Auto analysis of the response according to G.167 (03/1993) & P.340 (05/2000) requirements.
·Detailed graphical and tabular results for individual and overall test.
·Generation of report with the plots (Report Analysis).
·Options to recalculate test parameter across different region in the waveform (Plot Results).
·Option to zoom-in on any test results to investigate further.
·Supported on Windows Operating System with user-friendly Graphical User Interface.
·Compatible with GL's Universal HD T1/E1 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.