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3CX Phone System for Windows System for Windows
Page 32
Screenshot 9 - Adding PSTN Lines
6.
Click Next. The individual lines/ports will be ‘created’ and displayed in a columnar
format.
Virtual extension – In effect the VOIP Gateway “converts” each line/port to an extension,
so that the phone system can receive and forward calls to it. The virtual extension
number is a number assigned to it by 3CX Phone System so that it can address it as an
extension. There is no need to change this field.
Authentication ID & Password: These values are used to authenticate the phone lines
connected to the VOIP Gateway with 3CX phone system. These values must match the
settings configured in your gateway! By default the ID and password have been set to
the Virtual extension number.
Channels: The Channels field allows you to specify how many simultaneous calls this
port supports. An analog line supports 1 call; a BRI port supports 2 calls, an E1 (PRI) 30,
and a T1 (PRI) 23. If you prefer to address each line individually, you can create
additional SIP accounts and change the number of channels supported by each account
to 1. Note that your VOIP Gateway must support this – especially higher density VOIP
Gateways are easier to configure if you use one account for all lines connected to a port.
Direction:
This field specifies whether the port will be used for inbound calls, outbound
calls or both. By default it supports both ‘directions’.
External Number – This field specifies the actual PSTN phone line number and is used
for identification purposes only.