[asterisk-users] Inbound Calls From AS5300 Rejected with 488 Code

[Kristian Kielhofner]

On 10/9/08, Ketema Harris <ketema at ketema.net> wrote:
>
> Hi I have searched the mailing lists and come across similar threads, but no
> actual solution.  I am trying to use a Cisco AS5300 as a gateway for PSTNr.
> I have been able to configure it to take outbound calls and send them to the
> PSTN just fine.  Inbound calls however are rejected by asterisk with "488
> Not acceptable here" code.
>
> here are the details:
>

...lots of details stripped...

Thanks for the all of the info.  Wading through the various debugs I
would guess that Asterisk 1.2's SDP parser does not like the multipart
INVITE from the AS5300 with MIME type multipart/mixed, followed by a
regular SDP (application/sdp) and GTD (application/gtd) (ewwwww).

You have two choices:

1)  Disable GTD on the AS5300.  I personally don't like GTD and I
doubt you need the extra ISUP info anyway.  I don't see GTD
specifically enabled on the AS5300 but I only have experience with
AS5X50s on more recent versions of IOS so there might be a default I
don't know about...

2)  Update/upgrade to Asterisk 1.4:

http://bugs.digium.com/view.php?id=10947

  Asterisk 1.4 has much better support for multipart/mixed.  While
this bug references SIP-T, the underlying problem (multipart messages)
is the same.

  Let us know what happens.

-- 
Kristian Kielhofner
http://blog.krisk.org