Hi,

You can use translation patters to do this...

Go to CCMadmin>Route Plan.>xlation pattern.

Click add a new xlation pattern.

In the xlation patter field enter 5XXXX.

In the partition fied add the appripriate partiton, make sure that the css of user phones can reach this partition.

In the CSS field enter the apripriate CSS. Make sure the CSS has access to the partition of the Xlation pattern

scroll down to Called party xformations.

In the called party xformation mask..enter the full number eg 91202313XXXX

HTH, Pls rate useful posts