ZyXEL Communications X6004 User Manual

X6004 User’s Guide

This chapter shows you how to configure dialing rules, also referred to as LCR (Least Cost 
Routing) on the X6004. 

LCRs are made up of two components. The first part of an LCR is a set of 1 or more outbound 
line groups (see 

). The second part of an LCR is a dial condition, or a 

pattern of digits that distinguish each individual LCR. 
LCRs are used to give calling rights to authority groups, trusted SIP peers as well as outbound 
line groups. This is done via group management, see 

. Once you create 

an LCR, you can associate it with:

• Authority Groups - give all the extensions contained in an authority group the right to 

use the outbound line groups configured in the LCR.

• Trusted SIP Peers - give the telephones connected to the SIP peer the right to call the 

X6004 and then dial out from the X6004 using the outbound line groups configured in the 
LCR.

• Outbound Line Groups - give anyone calling in via the associated outbound line group 

the right to use the X6004 to make calls via the outbound line groups configured in the 
LCR. 

The following figure shows an example of two LCRs. LCR1 is composed of outbound line 
groups PSTN and TrustedPeer along with the dial condition 01. (the period (.) is part of the 
dial condition). LCR2 is composed of outbound line group ITSP along with the dial condition 
02.. When a user calls “021234” the call is routed through the outbound line group defined in 
LCR2.

Figure 166   LCR Components Example  

PSTN 

TrustedPeer 

 ITSP