Press Release: GL Announces Analysis Tools for
3G Mobile Broadband Networks
Gaithersburg, Maryland, USA - April 7, 2010 - GL Communications Inc., announced today the release of
its latest Analysis Tools for 3G Mobile Broadband Networks. Addressing the press conference, Mr. Jagdish Vadalia,
Senior Manager at GL said, "Mobile network traffic is expected to explode in the coming year as "smartphones" and
3G pervade the mobile user community. In a typical 3G access network, a "smartphone" user has high speed wireless
access to the nearest base station (or Node B, in 3G UMTS terminology). Then the transport of voice, video, and data
is thru ATM (Asynchronous Transfer Mode). ATM was selected because it provides quality of service necessary for voice
but can also carry data equally well".
He added, "ATM can use any form of transmission, but its overhead is quite a burden. If the access network is not
carefully designed, ATM bandwidth requirements will significantly affect the bottom line of any service provider. Tools
for traffic and protocol analysis are essential".
Mr. Vadalia further added, "As shown below in the picture, when the underlying transmission is TDM, many T1s or
E1s are used to carry ATM cells in a technique called Inverse Multiplexing over ATM, or IMA. If the underlying transmission
is T3 E3 or SONET SDH, then ATM can be carried directly in an unchannelized mode, which is more efficient. It may be
necessary to switch ATM cells from lower speed E1s (possibly in IMA mode) to an unchannelized STM1 or STM4 for traffic
concentration and better efficiency. In any case, it is apparent that testing and analysis of ATM traffic is useful on many
interfaces including T1, E1, T3, E3, OC3, OC12, STM1, and STM4. Proper tools will assist in the design of the access
network and appropriate backhaul architectures".
GL has developed various test capability to test and analyze ATM over different transmission. These include:
- the ability to capture and playback at up to OC12/STM4 rates with complete bit integrity
- raw transmission and reception of test cell traffic at determined bandwidth
- UMTS Protocol Analysis STM1, STM4, OC3, and OC12
- ATM Protocol Analysis over T1 E1 with IMA
- ATM Protocol Analysis over T3
- ATM Protocol Analysis over STM1, STM4, OC3, and OC12
- ATM Tx/Rx Raw Cells
- ATM BERT for OC3, OC12, STM1, and STM4
- ATM Record Playback for T1, E1, T3, OC3, OC12, STM1, and
- UMTS Protocol Analysis
- CDMA 2000 Protocol Analyzer
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.
GLís 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.
GLís 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) are all available.
GLís 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
GLís Echo Canceller testing solutions provide the broadest range of simulation and analysis, including line and acoustic
echo. GLís compliance testing per G.168. G.167 and P.340 across TDM, IP, VoIP and Wireless networks is widely accepted
in the industry.
GLís 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.
GLís 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.
GLís 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
For more information about GL's complete line of products,
Back to Press Releases Index Page
Phone: 301-670-4784 ext. 114