OPtion 61 to Call Manager/Unity

[mt6322]

We are looking at a proposal to replace an Option 81/Meridian Mail with Cisco Call Manager and Unity voicemail in our main office but keep our Option 61 with Suc 3 (no voicermail system) at our remote location. My question is, what hardware and software do we need to seamlessly integrate the Option 61 to the Cisco CM and Unity voicemail and maintain the 4 digit coordinated dialing, number/name display, MWI, and all other features. We intend to use the 3 existing T1 tie circuits between the two sites. Thanks you in advance for your response.

 

[PERRYPJ]

YOU WILL NEED TO RECONFIGURE THE T1 FOR QSIG

OLD ROLMEN WORKING ON NORTELS

 

[mt6322]

In addition to the 3 T1 tie circuits between sites configured as QSIG, do we still need a Cisco PIMG (PBX Interface Media Gateway)installed with the Option 61C to allow access to the Cisco Unity voicemal? Please advise. Thanks.