SIP response 380 "Alternative service"
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"SIP output code 380 Alternative Sercvice is defined in RFC 3261. SIP servers could send this response to INVITE request in case they for some reason don't want to fix the call as requested, but prefer some other way how to dial the number.
For instance, the SIP server may refuse to make a SIP call and as an alternative instruct Acrobits cilent to complete the call using call-through or web callback service, via the cellular network.""
For instance, the SIP server may refuse to make a SIP call and as an alternative instruct Acrobits cilent to complete the call using call-through or web callback service, via the cellular network.""
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