1.2 Network Devices and Numbering Plan
10 Getting Started
Dialing Examples
The VoIP network allows you to access the PBX at one location from another to establish: (1)
an extension call, or (2) an outside call through the local PSTN as if you are calling from the
same area.
Calling from Los Angeles to Chicago
To extension 301 via VoIP network
To local telephone 123-4567 via VoIP network through local PSTN
Calling from Chicago to Los Angeles
To extension 201 via VoIP network
To local telephone 456-7890 via VoIP network through local PSTN
Fax Extension
Number
500 to 599 600 to 699 A number assigned to each fax extension.
Los Angeles
Office
Chicago
Office
Description
Dial 41.Dial 7. Dial 301.
Chicago
PBX code
TIE line
access no.
extension no.
Dial 41. Dial 9.Dial 7. Dial 123-4567.
Chicago
PBX code
TIE line
access no.
phone no.
Chicago PBX
PSTN trunk (CO line) no.
Dial 35.Dial 7. Dial 201.
Los Angeles
PBX code
TIE line
access no.
extension no.
Dial 35. Dial 9.Dial 7. Dial 456-7890.
Los Angeles
PBX code
TIE line
access no.
phone no.
Los Angeles PBX
PSTN trunk (CO line) no.
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