ASTERISK is converting SIP 480 to SIP 503


We have observed that one of our ASTERISK Server is converting SIP 480 to SIP 503.

Please see attached screenshot. Is there any configuration file where this is set?

There is no configuration file for mapping. There are cases where the translation from SIP to ISDN cause code to SIP is imperfect and this may be one of them. To know for certain what actually happened and to ensure it wasn’t overridden, you’d need to also show the console output of a call.

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