What is the exact CM version you have ?? There might be a bug associated with it, but would not be able to get the exact info without CM version. One of the bugs you mite want to look at would be CSCse12278
Problem seems to occur when there was a change to the Calling Search Space of the directory number. Problem goes away when the voicemail checkbox is unselected, saved, then selected. Actually, goes away with any changes to the forwarding settings. Anyone know of a recommended fix for widespread?
Here is the bug that you are hitting, along with the workaround and Fixed-in-version;
CSCsg11358 Bug Details
CM5.04-Calls not forwarding to voicemail
Phone which is configured to Call Forward No Answer to voicemail stops following the forwarding path, and continually rings.
Issue can also potentially occur with CFwdAll.
Running CM 5.0(4) (and possibly earlier version of CallManager 5.0).
Updating the CFNA to an actual DN allows it to work (if previously using the VM checkbox). If the DN is removed and the VM checkbox is used, the DN will still continue to now correctly CFNA to Voicemail.
Sorry for the lateness of this reply, you probably have this issue fixed by now. There is also a related bug with this workaround;
Calls ring forever. i.e. Calls do not go to voicemail.
Symptom: We have several cases where folks have notified us that calls to their directory numbers (DN) do not go to voicemail. Conditions: Normal Call Scenario Workaround: As a workaround: What we've done is to explicitly enter a value of "20" in the "No Answer Ring Duration (seconds)" field of that user's directory number configuration page, click Save, change the value from "20" to NULL" and click Save again. At this point, unanswered calls now go to voicemail.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...
If you have 2 ISR routers, one acting as Failover, do we need to have both the same number of SRST licenses on the 2 routers?
No. You will only need the SRST licenses on the primary router. Because this feature...