[asterisk-users] Display IE

[Kevin P. Fleming]

Oscar Patricio wrote:

> 3. The CONNECT that is sent from span 2 to the PBX does not have the
> Display IE. The asterisk strips this IE from the CONNECT message.

This is an incorrect statement; 'strips' would imply that Asterisk is
just forwarding the CONNECT message from one PRI to the other, but in
fact that is not what happens.

Asterisk is a multi-protocol telephony platform, and it never *proxies*
or directly connects two channels together; instead, the incoming
signaling from any channel is converted into Asterisk's internal format,
then delivered to the other channel, where it is converted back into
that channel's format before being sent out.

If there are signaling elements being received that Asterisk does not
interpret for its own use or for exposure in the dialplan, then they
will be ignored.

To get your Display IE to be transferred to the outbound PRI, you'd need
to get chan_zap to parse it from the incoming CONNECT message, store it
in an Asterisk control frame and then accept that control frame on the
outbound side and send a Display IE. Doing this will require code
changes :-)

-- 
Kevin P. Fleming
Director of Software Technologies
Digium, Inc. - "The Genuine Asterisk Experience" (TM)