[asterisk-dev] SIP error codes interpreted by Asterisk as?

[Mark Hamilton]

Hi Johansson,

I just replied to Antonio thinking ISDN is not related to SIP error codes,
but your message says that you do infact use the SIP error codes.

How reliable is this information provided by the ISDN hangup causes? 

Thank you,
Mark.

-----Original Message-----
From: asterisk-dev-bounces at lists.digium.com
[mailto:asterisk-dev-bounces at lists.digium.com] On Behalf Of Johansson Olle E
Sent: March 20, 2008 3:15 AM
To: Asterisk Developers Mailing List
Subject: Re: [asterisk-dev] SIP error codes interpreted by Asterisk as?


19 mar 2008 kl. 23.50 skrev Mark Hamilton:

> Hello,
>
> There are quite a few error codes returned upon calling a number.  
> Like SIP 404 Not Found, 486 Temporarily Unavailable, etc. How does  
> Asterisk interpret these SIP error codes?
>
> Because when a call is made through Asterisk, and let's say it's a  
> disconnected number, Asterisk returns "Call failed, reason 0" or a  
> reason number from 1-10. What makes Asterisk decide what reason is a  
> SIP error code classified as?

In chan_sip we translate those error codes to the ISDN hangup causes  
we use internally in Asterisk, which you can reach
in the HANGUPCAUSE dialplan variable. We follow the IETF standards  
where available, or the Cisco implementation.

On the other end of the call, the ISDN cause codes are translated back  
to SIP.

/Olle


-------
oej at edvina.net
Edvina AB * Asterisk training * http://edvina.net
Asterisk SIP masterclass * Orlando Florida * April 2008


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