Terminating Trunk Transmission Testing
Issue 1 May 2002
5-31555-233-143
Terminating Trunk Transmission
Testing
The Terminating Trunk Transmission (TTT) (non-interactive) feature provides for
extension number access to three tone sequences that can be used for trunk
transmission testing from the far end of the trunks.
The three test types should have extension numbers assigned on the
Maintenance-Related System Parameters form.
Test Type 100:___ Test Type 102:___ Test Type 105:___
Test Type 100 provides:
■ 5.5 seconds of 1004-Hz tone at 0dB
■ Quiet until disconnect; disconnect is forced after 1 minute.
Test Type 102 provides:
■ 9 seconds of 1004-Hz tone at 0dB
■ 1 second of quiet
■ This cycle is repeated until disconnect; disconnect is forced after 24 hours.
Test Type 105 provides:
■ 9 seconds of 1004-Hz tone at -16dB
■ 1 second of quiet
■ 9 seconds of 404-Hz tone at -16dB
■ 1 second of quiet
■ 9 seconds of 2804-Hz tone at -16dB
■ 30 seconds of quiet
■ ½ second of 2225-Hz test progress tone
■ Approximately 5 seconds of quiet
■ Forced disconnect
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