Page 194 of 258 Dialing Plan configuration
For specific examples on the dialing plans, refer to “Dialing plan examples” on page 193.
•Option 1: DN ranges in the main office and SRG are unique, and DNs for SRG IP Phones are the same in both Normal and Local mode. This is the recommended configuration to support seamless dialing on both systems. See “Option 1: DN ranges in the main office and SRG are unique; DNs for SRG IP Phone are the same in Normal and Local Mode” on page 200.
•Option 2: DN ranges in the main office and SRG overlap, and DNs for SRG IP Phones are the same in both Normal and Local mode. See “Option 2: DN ranges in the main office and SRG overlap; DNs for SRG IP Phones are the same in Normal and Local Mode” on page 205.
•Option 3: DNs of SRG IP Phones and DNs in the main office overlap in
Normal Mode, but are unique in Local Mode. See “Option 3: DNs of SRG IP Phones and DNs in the main office overlap in Normal Mode, but are unique in Local Mode” on page 211.
Call scenarios
Call scenarios fall into the following categories:
•Common call scenarios occur in all CDP calls, regardless of which option is used.
•Unique call scenarios occur only within certain CDP options.
This section describes the common call scenarios. The unique call scenarios are described with the configuration of the corresponding option, starting on page 200.
Normal Mode: Main office telephone calls an analog phone at the
SRG
The call is routed through the NRS and handled by the SRG. Figure 62 shows how the call proceeds.
