This is a modified version of a default digit map for a service set up on sp1. Yours may look different after it has been configured for localphone. The two new/changed rules are in bold:
Service Providers > ITSP Profile A > General > DigitMap:
(1xxxxxxxxxx|<1>[2-9]xxxxxxxxx|<011:00>xx.S4|00xx.|xx.|(Mipd)|[^*#]@@.)
This rule <011:00>xx.S4 replaces the 011 that you dial to 00 that localphone wants to receive. The S4 reduces the delay in processing the number from ten to four seconds.
This rule 00xx. allows the changed number to be sent out on sp1.
If you are using sp2, then change the digit map for ITSP Profile B.