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Article ID #
05-5106-00041		Article Type
Troubleshooting Guide

Article Title
How to determine which end hung up when a trunk call disconnects		Publish Date
Dec-7-2005

Description/Symptoms
If the site is having an issue with calls disconnecting, this method can be used to determine if the disconnect was initiated by the provider, or by the PBX.

Body/Solutions
(1) Enable COS option #907 (Data SMDR - extended record) in
the trunk's COS. Ensure that System option #28 (SMDR indicator
long calls) is disabled.

(2) Whenever the PBX hangs up on the trunk (i.e. near end termination),
a '<' character will appear in column 1 of the SMDR record.

(3) If the outside hangs up (i.e. far end termination), a '>' character
will appear in column 1 of the SMDR record.

For outgoing calls, SMDR will have to be enabled in the trunk group.
For incoming calls, cos option 806 will have to be enabled in the trunks cos.

This feature applies to all trunk types except LS trunks connected via the AMB or AOB.

Test Result

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Product(s) Product Release(s)
SX-200; SX-200 Integrated Communications Platform (ICP)Various

Product Family Operational Task
PBX Telephone Systems; Integrated Communications PlatformTroubleshooting