18 Aug
2021
18 Aug
'21
3:22 p.m.
On Wednesday 18 August 2021 at 13:40:25, David Villasmil wrote:
In freeswitch you have the uuid_hold, etc api:
https://www.freeswitch.org/confluence/plugins/servlet/mobile?contentId=1966
741#content/view/1966741
You call the API uuid_hold [uuid] or uuid_hold off [uuid] to take the
channel out of hold.
UUID in freeswitch is what uniquely identifies a given channel.
But, would that not perform the hold function on the FreeSwitch server?
And, if after putting it on hold, I need to transfer a call to another number
/ channel, that transfer would also take place on the FreeSwitch server?
Or am I misunderstanding, and FreeSwitch can pass the instruction to "place
the call (channel if you prefer) on hold" on to the PBX system which my
existing client application is placing its calls through?
When you say:
“However, my understanding of a B2BUA is that *it* would then start
handling the state of the calls itself - whether they're on hold, routing
the transfers, etc.”
This is correct, that’s how B2BUA works, but you can send an API to fs via
ESL (tcp connection on port 8021) to put on hold not just your channel,
since that would simply send a reconly to your app, but also the B-leg of
the call.
This all sounds as though I am getting FreeSwitch to "do the work" and manage
the hold/transfer/resume/conference/whatever itself. I could do that with
Asterisk (which I already know, whereas I haven't used FreeSwitch), but it
isn't a solution to my needs.
I need something which will *tell the existing PBX* to do these things (and
it's probably not running FreeSwitch), in just the same way as pressing the
buttons on a competent SIP phone such as Yealink or Polycom would tell the PBX
to do it.
Antony.
--
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