In voice-port one needs to configure the correct companding type to avoid garbled audio on incoming calls.
Being the compand law already specified in the ISDN SETUP for incoming calls, I do not see the strict need to configure explicitely the compand-type to be A-law instead of default u-law, and think is a bug to have garbled audio in this case.
Does anyone recall such a request, I might have already raised the issue ages ago and do not remember the result.
when you use ISDN BRI Interfaces you have to change the compand type. In ISDN Q931/PRI interfaces the compand type will be configured automaticly. Normaly you have to adapt the compand type to the compand type of your country setting. as in europe you have to use a-law, in usa or japan u-law.
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