[asterisk-dev] Bounty

[Alex Balashov]

Who told you that you're always going to get a 180 Ringing reply?

Most providers that provide PSTN trunking will give you ringback as 
in-band via an early dialog (183 Session in Progress).  With some 
calls, you may just get a provisional 100 Trying reply and then 
nothing until a sudden 200 OK.  There are many possible flows and 
scenarios.

On 02/24/2010 07:59 PM, CDR wrote:

> I need a new Timeout parameter added to the Dial application, for SIP
> dialing. The new timeout would be "first-ring" timeout, as opposed to
> timeout for connection. If we don't get a 180 Ringing message before a
> certain amount of seconds, the call fails. This a needed addition to
> Asterisk. I need this in version 1.4 and cannot wait the normal time for
> a "new feature" process to complete. The rationale is clear: many
> carriers will hold the call indefinitely, instead of returning a 503. If
> the call is ringing, then I don't care if it rings for 60 seconds, but
> if there is no ringback before 6 seconds, I need yo try another carrier
> and move on.
>
> Please contact me at nine five four 444 seven 4 zero 8
>


-- 
Alex Balashov - Principal
Evariste Systems LLC

Tel    : +1 678-954-0670
Direct : +1 678-954-0671
Web    : http://www.evaristesys.com/