I'm experiencing a strange problem with ringback tones and incoming PSTN calls toward IP Phones which are busy.
The scenario is: a 2821 with IOS 12.4.9T2 and CCM 4.1.3sr3b.
When I try to call the IP Phones using a mobile phone or a digital line which sends all the digits togheter (en-block) the call goes fine.
If I try to call from a phone connected to an home analog line, which sends the digits with the overlap sending, I see in the isdn Q931 debug that the VG sends the call_proceed command (after correctly collected all the digits) to the CCM but nothing happen until the telecom operator close the connection after exactly 30 secs with the "recovery on timer expiry" cause. In the analog phone I hear silence and the reorder tone after 30 secs.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.