Troubleshooting MWI with embedded VM

[Dogbreath]

Struggling with MWI keys for shared mailboxes, it's so random. Light comes on but won't go off, delete and recreated keys and mailboxes, light goes off and won't come on, etc. Infuriating. Rel 8 VMiVB.
Does this mean anything to anyone?:

Code: [Select]

02/08 17:43:03 INFO    9050-01 mi_process_switch_packet: MiNet message with CLC value [1] is received
02/08 17:43:04 INFO    2403-02 VT_OFF:0
02/08 17:43:27 INFO    2403-02 VT_RECDONE:12
02/08 17:43:27 INFO    2403-02 VT_ON:0
02/08 17:43:27 ERROR   9216-00 the unified messageing session is not logged out
02/08 17:43:28 INFO    4729-36 Msg V5c5dbfb9.001 for 4451
02/08 17:43:28 INFO    9271-00 CvvmServerImpl::NotifyMessageCountChange:  mailbox=4451, newm=1
02/08 17:43:28 WARNING 7526-33 0x2f365ba4 CvvmServer::DoCallback(0x0, 5, 0, 0x159765a8) NULL session
02/08 17:43:28 ERROR   9192-00 Can't read length of recipient list
02/08 17:43:29 INFO    8483-30 mwi: vb_dial[*904451]

I can guess what the final step is trying to do, and yes the VM ports are allowed in CoS, but my light doesn't light.

[ZuluAlpha]

What type of phones?

[acejavelin]

Make sure the last 2 ports of the embedded VM are in the Voicemail Hunt Group and not used for RADs or other purposes. The embedded VM uses the last 2 for message waiting indication.

[Dogbreath]

5320 and 5330.
Every VM port is in the VM hunt group.

[ZuluAlpha]

Are people leaving "Callback" notifications by chance?

[Dogbreath]

Nope, it's all me testing it.