Operation Guide

6 Voice pages Local call routing
NN47928-502 187
The following example defines the local numbering plan as follows:
prefix for outbound calls (OBAccess): 9
area code: 408
central office prefix (COPrefix): 555
length of extension number (ENLength): 4
This configuration supports calls as follows:
Number dialed Action
2210 Four-digit call so only local accounts are
checked.
9411 Outbound prefix so number is interpreted as
outbound call for 411.
95552210 Outbound prefix, but also central office prefix,
so only local accounts are checked for 2210.
96872210 Outbound prefix, but not central office prefix, so
route 6872210 to PSTN.
914085552210 Central office prefix so only local accounts are
checked for 2210.