If using RTM, you can easily reproduce the bug using the packages available at http://people.canonical.com/~rsalveti/boiko/ (including some extra debugging messages).
Check the log that is available at /home/phablet/.cache/upstart/media- hub.log when play an audio and calling your phone. When it works, you should get the following: Got call started signal, pausing all multimedia sessions Pausing Player with key: 0 pause ** Summary changed: - Media-hub fails to get the call started/ended from telepathy-bridge + Media-hub fails to get the call started/ended signals from telepathy-bridge -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1409125 Title: Media-hub fails to get the call started/ended signals from telepathy- bridge To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/media-hub/+bug/1409125/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs