ZyXEL Communications ISG50 User Manual
Chapter 8 PBX Tutorials
ISG50 User’s Guide
143
8.3 Making PSTN Calls
The following section shows you how to make and receive calls via a connection to the PSTN. This
example covers:
example covers:
•
- configuring the outbound line group (connection settings) from the FXO
ports to the PSTN.
•
- creating a rule which tells the ISG50 when to use the PSTN
connection when completing outbound calls.
•
the PSTN connection.
Figure 117
Making a PSTN Call
8.3.1 The PSTN Connection
This example assumes that the ISG50 has an FXO interface already connected (refer to the Quick
Start Guide) and that you have connected your telephone cables to the outlets that connect to your
local telephone company. The front of your ISG50 should look as shown in the following figure.
Start Guide) and that you have connected your telephone cables to the outlets that connect to your
local telephone company. The front of your ISG50 should look as shown in the following figure.
In this example, ports 1-4 are used for the connections. You will use this information in a web
configurator screen later.
configurator screen later.
Figure 118
FXO Connection
PSTN
5555555
1001
Caller dials
05555555
05555555
The ISG50
matches this number
with an LCR, applies an
matches this number
with an LCR, applies an
offset (strips off the 0)
and routes the call to
PSTN.
and routes the call to
PSTN.
ISG
FXO
SYS
1
2
3
4
PSTN