asterisk users - Oct 2013 - MusicOnHold starts magically for no reason

Dear list,

on Asterisk 1.4.21 which is being used in a callthrough scenario - 
callers call via PSTN to a DID coming in via SIP and then dialing 
outbound via DTMF and the outbound calls get routed via some SIP 
termination provider - lately I see that every now and then MusicOnHold 
gets triggered like this on outbound calls:

Started music on hold, class 'default', on 
SIP/outbound-sip-provider-00000002

I do not have any reference to MusicOnHold in my extensions.conf so a 
misconfiguration is unlikely.

Is there some SIP magic that can trigger MusicOnHold on my end?

Thanks!
Markus

Hi,
> Is there some SIP magic that can trigger MusicOnHold on my end?
obviously, putting a call on hold will trigger music on hold.

Mayber your gateway does that when all outbound channels are busy or
something?

-nik

-- 
Wer den Gr?nkohl nicht ehrt, ist der Mettwurst nicht wert!

PGP-Fingerprint: 3C9D 54A4 7575 C026 FB17  FD26 B79A 3C16 A0C4 F296
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Can you post sip debug and the console log for this call? 

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces
at lists.digium.com] On Behalf Of Markus
Sent: Thursday, October 17, 2013 3:22 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] MusicOnHold starts magically for no reason

Dear list,

on Asterisk 1.4.21 which is being used in a callthrough scenario - callers call
via PSTN to a DID coming in via SIP and then dialing outbound via DTMF and the
outbound calls get routed via some SIP termination provider - lately I see that
every now and then MusicOnHold gets triggered like this on outbound calls:

Started music on hold, class 'default', on
SIP/outbound-sip-provider-00000002

I do not have any reference to MusicOnHold in my extensions.conf so a
misconfiguration is unlikely.

Is there some SIP magic that can trigger MusicOnHold on my end?

Thanks!
Markus

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Markus wrote:
> Started music on hold, class 'default', on
> SIP/outbound-sip-provider-00000002 
I see this on our system and it's considered a feature.  When the remote
system signals that a call has been put on hold, it will instruction the
local Asterisk system to do the actual holding.

I see this on our VOIP router and hear our hold music when the remote
party places me on hold.

Doug

-- 
Ben Franklin quote:

"Those who would give up Essential Liberty to purchase a little Temporary
Safety, deserve neither Liberty nor Safety."

Enable the full log in logger.conf. then in asterisk CLI run sip set debug on.

Wait for it to happen again, then check the log file /var/log/asterisk/full to
see if there's a sip statement being sent to your server to enable music on
hold

Sent from my Verizon Wireless 4G LTE DROID

Dominik George <nik at naturalnet.de> wrote:
>Hi,
>
>> Is there some SIP magic that can trigger MusicOnHold on my end?
>
>obviously, putting a call on hold will trigger music on hold.
>
>Mayber your gateway does that when all outbound channels are busy or
>something?
>
>-nik
>
>-- 
>Wer den Gr?nkohl nicht ehrt, ist der Mettwurst nicht wert!
>
>PGP-Fingerprint: 3C9D 54A4 7575 C026 FB17  FD26 B79A 3C16 A0C4 F296
>
>-- 
>_____________________________________________________________________
>-- Bandwidth and Colocation Provided by http://www.api-digital.com --
>New to Asterisk? Join us for a live introductory webinar every Thurs:
>               http://www.asterisk.org/hello
>
>asterisk-users mailing list
>To UNSUBSCRIBE or update options visit:
>   http://lists.digium.com/mailman/listinfo/asterisk-users
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