[asterisk-users] Asterisk as UAC: How to put call OnHold

[Johannes Zweng]

Thanks for your hint, but unfortunately this does not result in the
behaviour I am looking for. When I start "MusicOnHold" Asterisk
streams the OnHold music itself, even if I specifiy an invalid MoH
class or one without files.

What I was looking for is a way to send a re-INVITE to its upstream
SIP provider to inform it that the call should be placed on hold,
exactly as described in the example in Section 2.1 of RFC 5359
(http://tools.ietf.org/html/rfc5359#section-2.1).


Does anyone know how to do this from Asterisk dialplan? Any ideas are
appreciated! :-)


Greetings from a snowy Vienna,
John :-)



2012/1/16 Johannes Zweng <john999888 at zweng.at>:
> Ok, I will try this and let you know!
>
> Kind regards,
> John
>
>
>
> 2012/1/16 Sammy Govind <govoiper at gmail.com>:
>> Hey,
>> I have never worried about looking at the SIP re-invites or anything when we
>> engage MoH() application in asterisk. You can do a quick test on your test
>> machine for this.
>>
>> Regards,
>> Sammy
>>
>> On Mon, Jan 16, 2012 at 2:57 PM, Johannes Zweng <john999888 at zweng.at> wrote:
>>>
>>> Hi!
>>>
>>> Many thanks for this hint. I will try this! :-)
>>>
>>> A quick question: when doing this with "MusicOnHold()": will the SIP
>>> server be aware that the call is placed onHold (i.e. will Asterisk
>>> send the mentioned re-INVITE)?
>>>
>>> The point is - if possible - we want the caller to hear the OnHold
>>> Music from the SIP server. If not we would have to copy the MoH to our
>>> Asterisk (and change it on our side too, when it changes at the
>>> SIP-server).
>>>
>>>
>>> Kind regards,
>>> John
>>>
>>>
>>>
>>> 2012/1/16 Sammy Govind <govoiper at gmail.com>
>>> >
>>> > Hi,
>>> >
>>> > yes, please see MusicOnHold() Application. You can call this app in your
>>> > dialplan. This however will use the default music class and the
>>> > corresponding music files placed in the asterisk server. If you don't want
>>> > to stream music from Asterisk server side, try creating a new MusiconHold
>>> > Class without any proper directory. That way Asterisk would only complain
>>> > that there is no file to be streamed.
>>> >
>>> > Regards,
>>> > Sammy
>>> >
>>> > On Sat, Jan 14, 2012 at 6:25 AM, Johannes Zweng <john999888 at zweng.at>
>>> > wrote:
>>> >>
>>> >> Hi!
>>> >>
>>> >> Maybe I am missing something or am a little blind at the moment, but I
>>> >> didn't find out how asterisk can place a call on hold when acting as user
>>> >> agent client to another SIP server.
>>> >>
>>> >> Scenario:
>>> >> ----------
>>> >> Asterisk registers to another SIP server (provider) as user agent.
>>> >> An inbound call from this other SIP server comes in and arrives at
>>> >> asterisk.
>>> >> Asterisk performs some actions in the dialplan and should place the
>>> >> call on hold after some time, so that the caller only hears the on hold
>>> >> music from my provider (not streamed by my Asterisk).
>>> >>
>>> >> Technically speaking I want asterisk to send a re-INVITE
>>> >> message containing an updated SDP body with the attribute "a=sendonly" or
>>> >> "a=inactive" added so that the SIP server of my provider (where Asterisk is
>>> >> registered to as user) will recognize that the call should be placed on
>>> >> hold.
>>> >>
>>> >>
>>> >> A good example of what I want to achieve is presented in Section 2.1 of
>>> >> RFC 5359 (Session Initiation Protocol Service Examples)
>>> >> (http://tools.ietf.org/html/rfc5359#section-2.1) where "Bob" would be my
>>> >> Asterisk (as UAC), "Alice" is the external caller and "Proxy" is the
>>> >> provider's SIP server.
>>> >>
>>> >>
>>> >> Question:
>>> >> ----------
>>> >> Is there any way to perform this from the dialplan or by means of the
>>> >> manager API? Is there an application like "Hold"?
>>> >>
>>> >>
>>> >> Kind regards and greetings from Austria,
>>> >> John :-)
>>> >>
>>>
>>> --
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>>
>>
>>
>> --
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