7911 Phone - No Dial Tone, Unable to Recieve Calls
I have several 7911 phones that seem to be losing their connectivity status randomly. Occasionally when trying to call these extensions the call will redirect or go to voicemail as if the phone is in use/turned off, but in reality the phone is on and on the hook. The display on the recipient's phone seems normal, but when I pick up the receiver I do not hear a dial tone; when trying to dial out (without a dial tone) the display shows the normal " to <extension name> Ext. ###" as if it is calling but the call does not go through and only silence is heard.
When I hang up and pick the receiver up again the problem is fixed, a dial tone is heard and calls can be sent and received normally for a while (15 minutes to an hour) then it falls "offline" again and all calls to that extension are redirected until the receiver is picked up/put down again or the phone is reset. This is affecting several extensions, and replacing the phones with new ones does not fix the issue. I've compared settings for the extensions to my phone, also a 7911 but without any of the aforementioned symptoms, in the Unified Communications Manager Express and they appear to be setup properly. I couldn't find any information on this here so please help!
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.