Bell * Codes
*02 DeActivate *66 Notification on Busy Signal *03 DeActivate *66 Notification (One Time Only)
*12 Call Assitance (Police) *30 Cancel Forwarding
*31 Automatic Forwarding *32 Notify
*51 Intercom Ring I *52 Intercom Ring II
*53 Intercom Ring III *54 Extension Hold
*57 Call Trace *60 Call Screen (Selective Call Rejection)
*61 Selective Distinct Alert *62 Selective Call Acceptance
*63 Selective Call Forwarding *65 ICLID Activation
*66 Busy Call Return *67 Call Display Block
*68 Computer Access restriction *69 Last Call Return
*70 Call Waiting Disable (Per Call) *71 Three-way calling (Per Call)
*72 Activate Call Forwarding *73 DeActivate Call Forwarding
*74 Speed Dialling (8 numbers) *75 Speed Dialling (30 numbers)
*77 Anonymous Call Rejection *80 Call Screen Disable
*81 Selective Distinct Disable *82 Selective Acceptance Disable
*83 Selective Forwarding Disable *85 ICLID Disable
*86 DeActivate Busy Call Return *87 Cancel Anonymous Call Rejection
*89 DeActivate Last Call Return *90 Re-Activate Call Forwarding Busy
*91 De-Activate Call Forwarding Busy *92 Re-Activate Forwarding No Answer
*93 Call Forwarding No Answer (*91,*93 to completely disable) *94 Ring Control (Call Answer)
*95 Message Monitor (Call Answer (link|flash) to interuppt/talk)) *98 Call Answer
This list is as complete as I know it.