UCM6102 Outbound calls randomly stopped working


Configuration: UCM6102, Linksys SPA942 Desktop Phones, 1 analog Trust, 1 VoIP Trunk

Yesterday outboard calls could not be made irrespective of which trunk was set as primary and with the other as backup.

What logs, and other information can I provide here to help you to help me diagnose this?

Inbound calls work fine on both trunks.


Tying error
Trunk not Trust


UCM6102 is EOL,




you’re probably doing something wrong in the outgoing path.
Do this test, disconnect the PSTN line from UCM and connect it directly to an analog telephone,
Do outgoing calls work normally from the analogue telephone?

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