For this application, most calls take place as described in the preceding examples. Internal calls between locations are resolved as follows:
| User | dials | correct call route | correct user | mapping, number in use | Destination line | |
|---|---|---|---|---|---|---|
| VoIP telephone location A | 21 | 2# | none | 21 | LOCATION_B |
- Internal call between two VoIP terminal devices at locations A and B. The number dialed '21' matches the route '2#' in the call routing table. The call router sends the call out over the line to the remote SIP PBX without changing the number.