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ECT User Manuals  
The ECT-1 G.168 Tester Issue 4.2 (1.5 MB)
   Testing Echo Cancellers against G.168 Requirements
The ECT-1 Tone Disable Tester Issue 1.3 (344 K)
   Testing Echo Canceller Tone Disabling against G.164, G.165 and G.168 Requirements
The ECT-1 ALC Tester Issue 1.1 (628 K)
   Testing Echo Canceller ALC Devices against G.169 Requirements
Annex to ECT-1 Manuals Issue 1.0 (345 K)
   Getting Started with the ECT-1
G.168 Tester supplementary guide (977 K)

Other Software Documentation
PAMS Manual (Perceptual Analysis Measurement System) (690 K)
VINE Manual (Virtual Instrument Network Emulator) (440 K)
PESQ/PAMS Manual (461 K)
TTY Tools Manual (629 K)