
Phonebook Example | MultiVOIP FX Quick Start Guide |
|
|
Phonebook Example
Boise Office |
|
Area: 208 |
|
PBX System. |
|
Main Number: |
|
PSTN | |
40 extensions |
|
204.16.49.73 |
VoIP |
One Common Situation
Voip Example. This company has offices in three different cities. The PBX units all operate alike. Notably, they all give access to outside lines using
“9.” They all are ‘smart’ enough to identify voip calls without using a special access digit (“ 8” is used in some systems). Finally, the system operates so that employees in any office can dial employees in any other office using only three digits. Here are the phonebooks needed for that system.
Inbound Phonebook
Each Inbound Phonebook contains two entries. The first entry (4 digits) specifies how incoming calls from the other voip sites will be handled if they go out onto the local PSTN. Essentially, all those calls come to the receiving voip with a pattern beginning with 1+area code. The local voip removes those four digits because they aren’t needed when dialing locally. The local voip attaches a “ 9” at the beginning of the number to get an outside line. The PBX then completes the call to the PSTN .
The second Inbound Phonebook entry (1 digit) is for receiving calls from company employees in the other two cities. The
The local voip sees the pattern in its inbound phone book and notes the first digit (here either 2, 5, or 6).
To make the match, this first digit,
2, 5, or 6 is put in the “ Remove Prefix” field. This first digit must then be added back once again so that the voip will send all three digits to the PBX. The PBX can then dial the specific extension identified by the
Flagstaff Office
Area: 520
204.16.49.75
PBX System. Main Number:
10 extensions
Santa Fe Office
Area: 505
204.16.49.74
Analog VoIP
IP | PBX System. | |
Network | ||
Main Number: | ||
| ||
| 20 extensions | |
| PSTN |
Each Outbound Phonebook contains two pairs of entries, two entries for each remote site. Whenever an
The
PSTN
36