sounds like you are using the toll tables in the routing pattern.
You must set up a cor for this group that uses a different partition group. That partition group points the caller to different routes, those routes should have the prefix mark mark altered to not look at the toll tables.
I would set up two routes for them. One for local calling and one for long distance.
Each route would have the same trunk group used, but would have the prefix mark option set according to the table below.
I would avoid using the toll table prefix as it trys to add the area code based on the toll table chart.
Prefix Mark
This entry is not required for AAR. For ARS, enter a number from 0 to 4 or blank. Prefix Marks set the requirements for sending a prefix digit 1, indicating a long-distance call. Prefix Marks apply to 7- or 10-digit Direct Distance Dialing
(DDD) public network calls. A prefix digit 1 is sent only when call type is foreign number plan area (FNPA) or home numbering plan area (HNPA) in the ARS Digit Analysis table.
For a WATS trunk, the Prefix Mark is the same as the local CO trunk.
Valid entries Usage
0 - Suppress a user-dialed prefix digit 1 for 10-digit FNPA
calls.
- Leave a user-dialed prefix digit 1 for 7-digit HNPA
calls.
- Leave a prefix digit 1 on 10-digit calls that are not
FNPA or HNPA calls.
Do not use Prefix Mark 0 in those areas where all
long-distance calls must be dialed as 1+10 digits.
Check with your local network provider.
1 - Send a 1 on 10-digit calls, but not on 7-digit calls.
Use Prefix Mark 1 for HNPA calls that require a 1 to
indicate long-distance calls.
2 - Send a 1 on all 10-digit and 7-digit long-distance
calls.
Prefix Mark 2 refers to a Toll Table to define long
distance codes.
3 - Send a 1 on all long-distance calls and keep or insert
the NPA (area code) so that all long distance calls are
10-digit calls. The NPA is inserted when a user dials
a Prefix digit 1 plus 7-digits.
Prefix Mark 3 refers to a Toll Table to define long
distance codes.
4 - Always suppress a user-dialed Prefix digit 1.
Use Prefix Mark 4, for example, when ISDN calls route
to a switch that rejects calls with a prefix digit 1.
blank - For tie trunks, leave this field blank.
Netcon1