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Aastra - MiVoice Office 400 and MiVoice MX-One / How MiVoice 470 treat MOH
« on: February 03, 2026, 04:53:31 AM »
We have a MiVoice 470 in Austria.
Issue:
When Austrian callers (+43) call in, the announcement plays, but Music on Hold (MOH) is silent.
When German callers (+49) call in, both the announcement and MOH work correctly.
Both calls terminate on the same system.
Questions:
Could this be related to early media / SIP carrier behavior for Austrian numbers?
Does MiVoice 470 treat MOH vs announcements differently (pre-answer vs post-answer)?
Which trunk, routing, codec, or MOH settings should be checked to ensure MOH is sent correctly for Austrian inbound calls?
Are there known carrier interoperability limitations in Austria affecting MOH on inbound SIP calls?
Issue:
When Austrian callers (+43) call in, the announcement plays, but Music on Hold (MOH) is silent.
When German callers (+49) call in, both the announcement and MOH work correctly.
Both calls terminate on the same system.
Questions:
Could this be related to early media / SIP carrier behavior for Austrian numbers?
Does MiVoice 470 treat MOH vs announcements differently (pre-answer vs post-answer)?
Which trunk, routing, codec, or MOH settings should be checked to ensure MOH is sent correctly for Austrian inbound calls?
Are there known carrier interoperability limitations in Austria affecting MOH on inbound SIP calls?