Urgent: MM subscriber series needs to change

[manjupatil]

Dear All,

Please find the following scenarios, kindly help me out its urgent:

1: I do have 4xxxx stations on PBX & same 4xxxx subscribers on MM.
2: Now we are going to change series to 7xxxx.

Our 1st plan is:

1: Do make changes on PBX replacing 4xxxx stations (removing 4xxxx
stations & adding 7xxxx) to 7xxxx stations.
2: But on MM no any changes (4xxxx are kept as it is at primary number)only
adding 7xxxx stations as secondary number. Doing this i can leave
message on 7xxxx & also retreive the messages & tested the same
successfully, but the main problem is I am not getting MWI on 7xxxx
stations.

Note: If above plan won't work for MWI then will go for the below 2nd plan

Our 2nd plan is:

1: Do make changes on PBX replacing 4xxxx stations (removing 4xxxx
stations & adding 7xxxx) to 7xxxx stations.
2: But on MM no any changes (4xxxx are kept as it is at primary
number). Do I can leave message on 7xxxx using route pattern or any
other solution for this.
3: So that I tested for route-pattern deleting 1st digit 7 & insert 4 when it
reaches Voicemail, but nothing happens it doesn't work, Please help.

Appreciteing your help,

Thanks,
Manju