I'm having an issue where calls to one extension will not trasfer to voicemail if the user is on the line or DND is enabled.
User can login to the mailbox and save greetings, but callers cannot leave messages.
All other phones/extensions/VM/AA works fine.
Our previous workaround was to create a new mailbox for this user, which worked fine for months, then stopped working for no apparent reason.
Now, no matter what mailbox is assigned to this phone, the call simply drops once it attempts to transfer to voicemail.
The firmware has been updated on the phone and the SPA400.
When I run the wizard, it does not see the phones and extensions already in use, and I'm hesitant to proceed with the wizard as the rest of the phone system is working fine.
I've checked the credentials for the phone logging into the mailbox and the call forward busy settings, and they seem to be OK.
SPA 9000 v6.1.5
SPA 400 v22.214.171.124
SPA 942 v6.1.3(a)