Avaya Communication Manager, Руководство администратора, Страница: 1360 / 1854

Feature Reference
Answer detection
1360 Administrator’s Guide for Avaya Communication Manager
November 2003
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Some calls that are answered may be incorrectly classified as fast busy signals.
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Call classifier circuit packs also don’t recognize Special Information Tones (SIT) as answers.
Of course, the system generates a call record for any call that is classified as answered whether the
classification is correct or not. If Call Classification incorrectly classifies a call as answered, and then the
call is subsequently answered, the call duration reported by CDR includes the both time between the
incorrect classification and the actual answer and the remaining duration of the call.
If you want to use call classification, on the System Parameter Customer-Options screen verify the
Answer Supervision by Call Classifier
field is y. If not, contact your Avaya representative. You also
must have a call classifier circuit pack of the correct type. To find out what circuit packs you need, see
Hardware Guide for Avaya Communication Manager.
Network answer supervision
The central office sends a signal to the originating switch to indicate that the far end has answered. If a
call traveled over a private network before reaching the central office, the signal is transmitted back over
the private network to the originating switch. This method is extremely accurate, but it is not available
over most loop-start trunks (for example, central office (CO), foreign exchange (FX) and Wide Area
Telecommunications Service (WATS) trunks in the US).
Network answer supervision does not override answer supervision by timeout.
Answer supervision by timeout
You set a timer for each trunk group, using the
Answer Supervision Timeout
field on the Trunk Group
screen. Or you set a circuit pack timer for the ports on that circuit pack, using the
Outgoing End of Dial
(sec)
field on the Trunk Group screen. If the caller is off-hook when the timer expires, the system
assumes that the outgoing call has been answered. This is the least accurate method. Calls that are shorter
than the timer duration do not generate call records, and calls that ring for a long time produce call
records whether they are answered.
If network answer supervision is received, it overrides answer supervision by timeout.
Interactions
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Call Detail Recording
Answer Detection provides more accurate call records where tone detection is possible and
Network Answer Supervision is not received.
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Call Prompting
Call classification competes with Call Prompting for ports on the call classifier circuit pack.
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CallVisor ASAI
Call classification competes with CallVisor ASAI switch-classified calls for ports on the call
classifier circuit pack. Answer Detection triggers reporting of a connect event to ASAI.