The number of digits in a steering code that overlap with the mailbox number.
The steering code often overlaps with the first few digits of the local mailbox number. A full overlap, in which every digit of the steering code overlaps the mailbox number, is typical. By using a full overlap, users only need to dial the required mailbox number to call someone at another location.
Steering code = 22
Mailbox extension = 2244
|
Overlap |
Number dialed from another site |
|
0 |
222244 |
|
2 |
2244 |