If you go into the SSH console and do (M) Mailbox Maintenace and then (I) Inquire about mailboxes ie 1000-1099
You can get this sort of information.
>>> nupoint.oldham.gov.uk <<<
Mailbox Data Inquiry
Thu Sep 20 18:21:46 2012
Box Msgs Unp Urg Rec Mins FCOS LCOS GCOS NCOS SGID MWI Passwd
1000 0 0 0 0 0.0 21 1 1 1 DTMF to PBX 1111
1001 0 0 0 0 0.0 21 1 1 1 DTMF to PBX 1111
1002 0 0 0 0 0.0 21 1 1 1 DTMF to PBX 1111
.......
This is will give you mailbox and all COS settings assciated with it.