iPECS UCP - 2.53 LCR (Least Cost Routing)

iPECS UCP
Feature Description and Operation Manual Issue 1.3
166
2.53 LCR (Least Cost Routing)
Description
The LCR Tables are employed to define appropriate routing for outgoing calls based on the
dialed number. Generally, the LCR Tables are structured to define the Least Cost Route for
Long Distance calls.
Your dialed digits are compared to table entries and modified based on time of day, day of
week, and assigned routes. There are four LCR Tables: LCR Control Attributes, LCR Leading
Digit Tables, LCR Digit Modification and LCR Initialization Tables.
LCR Access modes are assigned in the LCR Control Attributes Table. These modes define
the manner in which you access the LCR function. LCR may be disabled or one or more of
the three access modes can be allowed to access LCR. The basic modes are:
1. Internal LCR
If you dial digits that match an Internal LCR code in the LDT (Leading Digit Table),an
outside Line is selected and digits are modified using the DMT (Digit Modification
Table).
2. Loop LCR
If you dial 9 (the 1st available Line Group access code) or presses a {POOL}
or{LOOP} button to place a call, the Loop LCR mode is accessed. Dialed digits are
compared to the Loop LCR codes in the LDT; the system will seize an outside Line
from the assigned Line Group and sends digits from the DMT.
3. Direct CO LCR
If you select a {LINE} or {LINE GROUP} button, the Direct CO LCR mode is
accessed. If the dialed number matches a Direct LCR code in the LDT and the seized
Line belongs to the assigned Direct CO LCR group, the system will send digits
modified based on the DMT.
Operation
System
Conditions
Operation of LCR is automatic based on assignments in the system’s LCR Tables
1. There are a total of 6 LCR access mode combinations that can be defined as
below:
1) LCR Access Mode 00 (M00) – LCR is disabled.
2) LCR Access Mode 01 (M01) – Loop LCR access is active.
3) LCR Access Mode 02 (M02) – Loop and Internal LCR access are active.
4) LCR Access Mode 11 (M11) – Direct CO and Loop access are active.