Altigen AltiWare ACM 5.2 Administration Manual page 187

3. On the Dialing Pattern tab, add two dialing patterns: "1214" and "1972", each with
a pattern length of 11.
4. Define a route called "10-digit Dialing" and add all T1 channels to the route. In the
"Digit Manipulation" section, check the first box, select Delete from Head, and
delete 1 digit:
5. Apply the "10-digit Dialing" route to dialing pattern 1214 and 1972:
Chapter 14: Out Call Routing Configuration
AltiWare ACM 5.2 Administration Manual 175