GL Enhances Direct T1 E1 DS0 Access for SONET SDH

Gaithersburg, MD, January 20, 2016 --( GL Communications Inc., announced today its enhanced OC3/12 and STM1/4 Analysis and Emulation Platform referred to as LightSpeed1000™. Among its many features is direct access to any or all T1s E1s (336 T1s = 16,128 DS0s, or 252 E1s = 15,624 DS0s) inside the OC-12 STM-4.

Speaking to the press, Mr. Jagdish Vadalia, a Senior Manager for product development of the company said, “GL's LightSpeed1000™ comes with all the necessary software for capturing, monitoring, emulation, and protocol analysis over SONET-SDH links, with a price tag that compares very favorably with similar test instruments at 3 times the price.”

He added, “LightSpeed1000™ supports both Channelized and Unchannelized modes. 2 out of the 4 ports are meant for SONET/SDH Unchannelized and unframed data. The remaining 2 ports can be either SONET/SDH or GigE (future) ports meant for Channelized T1 E1.”

Mr. Vadalia further added, “The enhanced GL’s LightSpeed1000™ platform in Channelized Mode provides simplicity and permits direct DS0 level access to hundreds of T1s and E1s within OC-3 STM-1/OC-12 STM-4, and in the near future all the E3s and T3s constituting the OC-3 and STM-1. This platform with its unique architecture eliminates the requirement for external multiplexing hardware and hundreds of cables and connectors. Multiple, interdependent streams of any user-defined capacity can be generated internally, analyzed, and monitored in real-time.”


2 Channelized OC-3 STM-1/OC-12 STM-4 SONET/SDH interfaces per Lightspeed1000™ card
2 Unchannelized OC-3 STM-1/OC-12 STM-4 interfaces per Lightspeed1000™ card
Channelized ports act as terminal multiplexers and demultiplexers
Allows direct access to anything and everything on SONET / SDH - Framing and Payload, including structured traffic (DS0, T1, E1, STS-1, DS3 etc) or unstructured traffic (ATM, PoS, etc).
Scans the received STM-4/STM-1 traffic and identifies the mapping, tributary type [T1/E1], equipped/unequipped status of the tributaries
Broadcasts the selected T1/E1 channel data on all the 252 E1’s or 336 T1’s
Supports any combination of DS0/64/56/16/8 kbps fractional T1/E1, and N x T1/E1 interface definitions (a total of 252 E1s or 336 T1s – in each port )
Pluggable SFPs allow Single-mode (SM), and Multi-mode (MM) fiber optic non-intrusive tap
API for Microsoft® Windows® and Linux operating Systems to develop user specific applications
Key T1 E1 specific features -

Comprehensive protocol analysis and emulation - HDLC, SS7, ISDN, CAS, PPP, Frame Relay, ATM and more
Analysis of DS0s for frequency, power level, spectral display, listen to channel
GL's proven WCS high level remote interface
All protocols analyzers can be used with GL's NetSurveyorWeb™

Applications for Direct T1 E1 within SONET SDH:

GL's MAPS™ GSM simulation over A Interface simulates BSSMAP & DTAP messages and signaling specification as defined by 3GPP standards
Monitoring GSM Abis link over channelized OC-3 STM-1 for monitoring RF information, Roaming, SMS, Location update, and more

GL's MAPS™ SS7 simulation over TDM (T1E1) simulates Service Switching Point (SSP). The ISUP signaling specification conforms to ITU-T and ANSI standards
Testing voice and data services on hybrid networks (such as ATM to SDH)

Non-intrusive protocol analysis and monitoring (ex: Monitor tens to hundreds of SS7 links for signaling and bearer channels)

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, remote operation, and scripting.

Our test solutions cover wide array of networks – 4G (LTE), 3G, 2G, IP, Ethernet, T1, T3, E1, E3, OC-3/STM-1, OC-12/STM-4, and analog. GL’s tools are widely used by the telecommunication industry for: conformance testing, automated stress/load testing, and performance assessment, and analysis. For more information about GL’s complete line of products,
Shelley Sharma
Phone: 301-670-4784
E-mail: info at
GL Communications Inc
Mr. Shelley Sharma