[asterisk-users] SIP 420

[Jonathan Thurman]

On Mon, Dec 20, 2010 at 9:46 AM, Dovey Forman <dovey.forman at idt.net> wrote:
>
> I am trying to initiate a call FROM a softphone client to asterisk (either
> an internal 4 digit extension call) or an outside line via a SIP trunk.
>
> In both cases, asterisk rejects the call with a 420.
>
> In this case, it’s a call from x3992 to x4415
>
> Does this require a change on the softphone for x-call-detail?

Yes.  The softphone is requiring x-call-detail, which Asterisk does
not support.  The softphone either needs to drop that requirement
completely, or change it to a Supported header so it can be processed
by other SIP servers.

-Jonathan