[asterisk-users] Reinvite dialplan application [Was: OT - SIP - Toggle to autoanswer after ringing]

[Steve Davies]

On 5 October 2011 10:21, Nasir Iqbal <nasir at ictinnovations.com> wrote:
> You can do this by an AMI based transfer (Redirect) to Local channel, and
> then in local channel's dialplan you need to add your desired custom sip
> header followed by a dial command.
> Nasir Iqbal
>
> ICT Innovations
> http://www.ictinnovations.com/
>

Broadcom invented some SIP NOTIFY extensions to cover this case -
Several "open" SIP handsets support the Broadcom extensions, which
revolve around sending a NOTIFY "Event: hold" or "Event: talk"

Asterisk does not support these NOTIFY messages at present, though I
expect they could be added reasonably simply.

Regards,
Steve