[asterisk-users] Get sip response code

[Robert Lister]

I was wondering if it is possible (in 1.2.x) to get the SIP response code 
back after doing Dial().

Dial() seems to treat most call-setup problems as dialstatus CONGESTION, and 
some are NOANSWER, but I want to know the SIP response code, so I could 
return the right tones to the user, not just a congestion tone for every 
fault.

Anyone know a way to find out that information, so I want the "604" out of this lot:

    -- Called xxxxxxxxxxx at sipgw
    -- Got SIP response 604 "Does Not Exist Anywhere" back from x.x.x.x
  == No one is available to answer at this time (1:0/0/0)
    -- Executing NoOp("SIP/42105-d313f470", "-- DIALSTATUS is: NOANSWER") in new stack
    -- Executing Goto("SIP/42105-d313f470", "s-NOANSWER|1") in new stack
    -- Executing PlayTones("SIP/42105-d313f470", "Unobtainable") in new stack
    -- Executing Wait("SIP/42105-d313f470", "10") in new stack

Or where do I need to look to find a SIP response code -> DIALSTATUS mapping?
Are these configurable anywhere or are they hardcoded?

If I push the response code back to the handset (Cisco 7960) then it is even 
more unhelpful as it uses the same error message for all SIP error type 
response codes: "Reorder" but does not tell you why the call failed to set 
up. If it actually put the SIP response error on the display, that would be 
good, but it doesn't. (at least SIP 8.6 and prior software versions)

If it returns Congestion for, say, an invalid number destination, users hear 
what sounds like an engaged tone, when what I want them to hear is an 
unobtainable tone.

Rob