On Friday 20 August 2021 at 19:06:09, George Joseph wrote:

> On Fri, Aug 20, 2021 at 8:33 AM Antony Stone wrote:
> > 
> > So, if I have Asterisk registered as a SIP client to some remote server,
> > how can I get Asterisk to tell that remote server to put the call on hold
> > (which a standard SIP telephone would normally do by sending a ReINVITE
> > with the SDP parameter 'sendonly')?
> 
> On the outgoing pjsip endpoint, set "moh_passthrough = yes".   If you then
> put incoming call on hold, a reinvite with sendonly will be sent to the
> upstream server.

So... how do I put the incoming call on hold, when the dumb client I'm 
starting from cannot do that bit?

I already know (from this list) that Asterisk as a SIP client cannot do ore 
than (a) place a call, (b) answer a call, and (c) hang up a call.

So, I'm still intrigued as to how you think this might be possible.

If it *is* possible, I'd be really interested, but all my researches so far 
suggest that Asterisk, acting in the middle like this, just cannot add the 
necessary "put call on hold" which the original client cannot do.


Antony.

-- 
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 - cucumbers and gherkins
 - snakes and queues
 - wearing something, or carrying it
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 - a man and a husband
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