[asterisk-users] SIP 603 response when call is not answered

[Hooman Fazaeli]

Hi

I have noticed that asterisk returns 'SIP 603' when the called party does
not answer.

My test setup is simple: two SIP phones (extensions: 100 and 111)
registered to an Asterisk 1.8.30.0 gateway.The Dial timeout is 30 seconds.
When 100 calls 111 and after 30 seconds, asterisk sends a CANCEL request to
111 (expected) and a '603 Decline' response to 100 (unexpected &
misleading).
It seems to me that a'480 Temporarily unavailable' response is more
suitable in this situation.

Is this a normal behavior of asterisk or a bug?

Thanks.
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