Directory Numbers Classification#
The Cisco HCS dial plan enables the creation of directory numbers (Cisco Unified Communications Manager Internal DNs) with these choices of characteristics:
Dial Plan Classification#
Dial Plan Configuration Type |
Site Location Code (SLC) |
IDP (Inter Site Prefix (ISP)) |
IDP in DN |
Extension Dialing Prefix (EDP) |
Extension Format |
|---|---|---|---|---|---|
1 |
Yes |
Yes |
No |
Unnecessary with ISP |
SLC + Ext, No ISP in SLC |
2 |
Yes |
Yes |
Yes |
Unnecessary with ISP |
ISP+SLC+Ext (ISP is part of SLC) |
3 |
Yes |
No |
No |
Yes/No |
SLC+Ext and no ISP, can be with or without EDP |
4 |
No |
No |
No |
Not Applicable |
Ext (Flat Dial Plan/ no SLC) |