[Freeswitch-users] Terminating calls prior to answer using api

Steven Ayre steveayre at gmail.com
Mon Feb 11 20:40:57 MSK 2013

You either answer a call with 200, redirect with 3xx, or give an error 4xx
5xx or 6xx... basically without answering your only option is to return an

The specific error code can show a varying number of levels of 'error'
though. Some might be a perfectly valid result (eg 486 User Busy) while
other's imply a more serious error (eg 500 Server Internal Error). But
there's not really one for a successful unanswered call.

How your phone behaves on the various errors is really up to the SIP client
though. A generic unable to connect message doesn't sound very useful, I'd
expect different error tones depending on the response code.


On 11 February 2013 15:30, Gary Foreman <gaz.foreman at gmail.com> wrote:

> Hi,
> I'm having an issue gracefully terminating calls prior to them being
> answered.
> When I issue the uuid_kill command prior to the call being answered my sip
> client gives an error "unable to connect" with an error tone.
> Is it possible to cancel the client dial without causing an error? Maybe
> using a sip notify message or something?
> I can't seem to find a list of valid sip notify messages anywhere.
> Thanks
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