Kevin P. Fleming wrote:

 

> This is because hook-flash support is in chan_zap, not in the core of
> Asterisk. There is no need to support hook-flash on any other channel
> type, because every other channel type supported by Asterisk has its own
> (more reliable) methods of signaling.

 

I'm seeing many discussions on how to provision Blind Transfer, Attendant 
Transfer and Call Parking services using keypad keys # and * to invoke the 
services, however its not clear to me how can it be possible without 
interfering to normal call when service is not being invoked.

 

For instance, I usually access an external IVR system that uses # and * signals 
in its menu for interaction with the caller. Let's say I provision a SIP phone 
(that do not support services like Transfer locally) to have the services 
provided by Asterisk. May question is, If I call to this IVR system and signals 
# and/or * are required for interaction with the system, what will happen when 
I dial # or *?

 

Is there any alternative to invoke mid-call services without using the # and * 
signals? I was expecting to use Hook-Flash either via INFO or RTP 
telephone-event.

 

Thanks a lot!

Marcelo.

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