T1 E1 Testing

Testing Developmental EC Software for G.168 Compliance without EC Hardware


Auto EC Test Software (XX067) 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)

The AutoECTest Software (xx067) is intended to work with GL hardware (T1 or E1 dual cards) and the customers EC hardware. But it can also be used to test development EC software, that is, the customer's EC hardware is not required. In this case the AutoECtest software is used as depicted below

As depicted above, AutoECTest Software works with the EC Software as follows

  • AutoECTest Software provides the input files Rin and Sin(with echo) to the EC Software. This is done by providing the files in a specified directory
  • The EC Software is expected to pick up these stimulus files (by frequently polling) and apply them to the EC in synchronous fashion
  • The EC Software produces the output files Sout and possibly Rout and provides it to the AutoECTest software for analysis. In general AutoeCTest Software is polling for output files once it provides input files to the EC Software
  • The AutoECTest performs a full analysis (with detailed displays) that results in a "Pass" or "Fail". Screen shots are provided below
  • AutoECTest then generates the next set of input files for processing by the EC Software
  • This process continues until all tests in the test configuration are completed
Auto EC Test without EC Hardware


Test Cases Supported

GL's provides support for the basic set of G.168 (2000) compliance tests. For more information visit EC Compliance Testing per G.168 Using Manual Methods webpage.


Please Note1: The XX in the Item No. refers to the hardware platform, listed at the bottom of the Buyer's Guide, which the software will be running on. Therefore, XX can either be ETA or EEA (Octal/Quad Boards), PTA or PEA (tProbe Units), XUT or XUE (Dual PCIe Express) depending upon the hardware.

Item No. Item Description
XX067 Automated Echo Canceller Testing w/o VQT
XX019 Tx/Rx File Utility (with File Based Approach)
XX610 w/ Transmit and Receive File Capability (included)
XX630 DSP Functionality (included)
  Related Software
XX020 Record/Playback File Software
XX051 Synchronous Trunk Record Playback
XX022 DTMF/MF/MFC-R2 Detector and Generator Software
XX031 Enhanced T1 / E1 Call Capture/Analysis Software
XX062 Echo Path Delay/Loss Simulation Software
XX063 Echo Path Delay/Loss Measurement Software
XX065 G.168 Test Suite for T1 & E1 Echo Cancellers
(Manual Testing Software and Procedures)
XX066 Digital Echo Canceller
XX068 Semi-Automated and Scripted Echo Canceller Testing Suite
VBA032 Near Real-time Voice-band Analyzer
PKB081 Automated Acoustic Echo Cancellation (AEC) Compliance Test Software
  Related Hardware
Dual T1 E1 Express (PCIe) Boards (requires additional licenses)
FTE001 QuadXpress T1E1 Main Board (Quad Port– requires additional licenses)
PTE001 tProbe™ T1 E1 Base Unit
  Recommended Accessories
SA013 T1 / E1 On Site Training Class (not including travel or hotel)
SA021 File Edit Software
SA026 Adobe Audition Multitrack Sound File Viewing and Editing Software
SA017A RJ48C to RJ48C Straight Cable, 10ft. cable
SA017A RJ48C to RJ48C Crossover Cable, 10ft. cable
SA008a Handset Adapter with Handset
SA022 Extended 1 Yr. Software Upgrades and Hardware Warranty, and Comprehensive Support for Basic and Optional Software

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