ZyXEL Communications IP PBX X6004 - Manual (Page 71)

Chapter 3 Tutorials
X6004 User’s Guide
71
• Assigning an LCR to an Authority Group - giving extensions the right to
make outbound calls via the ITSP connection.
3.3.1 The ITSP Connection
The following section introduces how to configure a connection to the ITSP. This
example assumes that the X6004 has a network connection to the SIP server at
your ITSP. The following figure shows the network configuration used in this
example.
Figure 17 Network Connection to ITSP
FXO
ITSP
212555555
1001
Caller dials
1212555555
The X6004 matches this number
with an LCR, applies an offset
(strips off the 1), add a dial plan
and routes the call to ITSP.
prefix 016 to the start of the number
ITSP
127.23.37.22
DMZ
WAN