Internet Protocol (H.450)
113
SBX IP 320 Features & Operation Guide
CO Transit - Out
The CO Transit-Out increases efficiency of CO lines and reduces call costs by routing outgoing
CO calls to the nearest appropriate point on the networked System. The System should be
provided sufficient digit translation and string analysis options to enable the switch to route the
call correctly.
1.
Station 202 of the slave system dials the CO TRANSIT-OUT code, that is registered in
the network numbering plan table (PGM 324). The term of CO TRANSIT-OUT code is
that a station of a slave system can seize the PSTN CO line of the master system.
2.
The slave system seizes a CO line that is preprogrammed for transmitting the CO
TRANSIT-OUT code to the master system. And, the dialed code is transmitted to the
master system.
3.
The master system seizes a CO line that is preprogrammed to serve the lend request by
the CO TRANSIT-OUT code. After seizing the PSTN CO line, the master system sends
the digit information to the PSTN that is dialed from the station of the slave system.
4.
The called user of PSTN receives ringing. The caller and called users can converse when
the called user answers.
Operation
To activate the CO Transit-Out:
1.
Dial the CO Transit-Out code from a Station on another networked System.
2.
The Networked System will secure a CO line that is preprogrammed for transmitting the
CO Transit-Out codes to the Master System
3.
The Master System will secure a CO line that is preprogrammed to receive the CO
Transit-Out codes.
4.
After seizing a PSTN CO line, the Master System will send the digit information to place
a call.
5.
The Called Station will ring, and the call will be connected when it is answered.
Conditions
•
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.
•
At the Master System, the Attendant must have CO access authority to make a public
connection.
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