ZyXEL Communications X6004 User Manual

Chapter 3 Tutorials

X6004 User’s Guide

Figure 51   LCR to Authority Group Assignment

3 You can now use the telephones that are part of the Basic authority group to make long 

distance calls using the ITSP connection. The following figure summarizes the outbound 
call process for this example.

Figure 52   Outbound Calls via ITSP

The X6004 has built-in call features for functions such as call forwarding, call blocking, 
voicemail and so on. These features can be activated or accessed by dialing specific numbers 
from the phones connected to the X6004. The numbers used to access call features are called 
call feature codes. This section shows you how to customize call features. It also describes 
how to configure a ZyXEL IP phone (V300 is used in our example) to access voicemail by 
using the voicemail feature code. See 

 for more information on all call 

features.

Click Configuration > PBX > Server Configuration > SIP Server > Feature Code to 
display the codes used for the X6004’s call features. You can change the codes in this screen. 
Provide the users with a list of the features and corresponding codes. Users on your network 
can then dial a code from their telephone to activate a specific feature. For example, dialing 
*96 transfers a call.  

Caller dials 
1212555555

The X6004 matches this number
with the long_distance_call LCR,

applies the offset (strips off the 1), 

of the number and routes the call  

to ITSP.

sends the call 
016212555555.

The X6004 

adds the prefix 016 to the start of   

and sends the call 
to 212555555.

The ITSP applies
the dialing plan rate