Network Test Equipment from GL Communications, Inc.

Channel Associated Signaling Simulator -- XX625

Channel Associated Signaling Simulator -- XX625 -- View Larger Image
Channel Associated Signaling Simulator -- XX625-Image

Channel Associated Signaling (CAS) is a method of signaling in telephone networks where each channel or timeslot carrying speech also carries with it the signaling and addressing to set up and tear down that same channel. This is referred to as "in-band" signaling. Various types of CAS signaling types include Loopstart, Groundstart, Feature Group D (FGD), Winkstart, E1 MFCR2, and others.

GL's Channel Associated Signaling (CAS) simulator is a client-side application that works along with the GL's T1/E1 Analyzer Cards and Windows Client/Server software. It is an optional application that simulates and analyzes any user-defined CAS protocols by providing signaling bit transitions and forward/backward frequency digits and tones. In order to easily create the user-defined CAS scripts, the CAS simulator includes a script editor. Multiple user-defined protocols may be defined for each of the digital T1/E1 trunks associated with the GL analysis boards. In addition to generating/receiving CAS calls, the CAS simulator also processes the receipt of Dialed Number Identification Service (DNIS) and Automatic Number Identification (ANI) information.

CAS emulation is also available with GL's Message Automation and Protocol Simulation (MAPS™). MAPS™ is a multi-protocol, multi-technology platform used for the emulation of a variety of communication protocols over IP, TDM, and Wireless networks. MAPS™ CAS can automate the testing procedure allowing the users to establish calls, and send/receive TDM traffic such as DTMF/MF digits, Tones, Fax, and Voice.

In addition, GL supports various E1 MFCR2 analysis and simulation solutions. For more information, visit MFC-R2 Analysis and Emulation webpage.

Supported Protocols

  • E1 MFC-R2 (All variants, fully/semi compelled)
  • E1 European Digital CAS (EUC), Digital E & M, International Wink Start
  • E1 AP2 (Australian P2 protocol)
  • T1 Winkstart (R1 wink)
  • T1 Loopstart, Groundstart, Immediate Start, Feature Group D
  • Any User-Defined CAS Protocol
Main Features

  • Accesses the T1 (or E1) analyzer remotely
  • Supports called number and calling number identification
  • Customized signaling for each channel through scripts
  • Ready-to-use scripts for quick testing


Product Category
Network Test Equipment
Network Protocol