LG-Ericsson ipldk-60, Feature Description And Operation Manual

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Issue 2.2
Feature Description and Operation Manual
230
16.3 CO Transit - Out
Description
CO Transit-Out increases efficiency of CO lines and reduces call costs by routing outgoing CO
calls to the nearest appropriate point in a network of systems. A user at one system can dial
the appropriate CO line access code for lines in the remote system. Codes are assigned in
the Network Numbering Plan at both systems and digit repeating passes the user dialed digits
to the remote system.
When the user dials the code, the local system compares the digits with appropriate local
Numbering Plan codes then to the Network Numbering Plan codes to determine routing.
When the number is found in the Network Numbering Plan table, the call is routed to the
designated networked system. Any digits received are sent to the remote system for proper
routing.
Consideration

To use CO Transit-Out, the networked system user must dial the CO transit-out code; the
CO Transit-Out service is not activated by pressing a CO Line button.

The Station COS of the networked system is applied for toll restriction.

For CO Transit-Out, any numbering sequence code can be assigned in the Network
Routing Table – Network Numbering Plan (PGM 324). If a conflict exists between the
System and Network Numbering Plans, the System Numbering Plan has priority.

The terminating PSTN lines must be assigned as Networked PSTN CO lines in the
terminating system.

For proper operation of CO Transit-Out, the Network CO Line type and System Usage
must be assigned as PSTN.

While not recommended, a call may be routed to the terminating system through an
ancillary system when a direct network connection is not deployed between the
originating and terminating systems.

When enabled in the Network Routing Table – Numbering Plan, the user must enter a
valid Station or System Authorization code for access. The associated COS is
implemented for the call.

The system, which terminates the call, will display two SMDR records for the call, the
original incoming call from the station number and the transit-out call.
Reference
A. System Numbering Plan
B. Authorization Codes
C. Class of Service
Admin Programming
Networking CO Line Type (PGM 322, Flexible button 2)
Assigns the PSTN CO line type for the terminating system
Network Routing Table - Numbering Plan (PGM 324)
Assigns the Transit Out code, System Usage and routing information for the code