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When calling some extensions, no voice is heard

Posted: 31 May 2021 08:11
by dsph2003
A4400, digital telephony, When I call some extensions I do not hear the other party. This only happens with certain extensions.
Anybody has an Idea why? Already changed the devices, changed the board address, changed the board itself.

Re: When calling some extensions, no voice is heard

Posted: 31 May 2021 18:42
by oldboy
Digital to Digital, Digital to IP, Digital to Analog??