
118 Chapter 6 Setting up VoIP trunks for outgoing calls
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Normal. schedule for all fallback destination codes:
Figure 37 Normal schedule routing information
1 Change Use Route to the route you configured for your PSTN fallback line (the line to the
other system).
2 Set the Absorbed length to absorb the amount of the destination code that is not part of the
DN for the other system.
If this is a private network PSTN line, and the network uses a CDP dialing plan, and the
remote system identifier is 2, which is part of the remote system DN structure, and you
specified destination digit of 2 for the remote gateway, then configured a destination code of
82, set this field to 1, so that the 2 is still part of the dialout.
If the destination code is different from the private access code/destination digits for the
remote system (UDP dialing plan) or this is a public PSTN, enter private access code or the
public access number to the remote system into the External # field on the route record. In this
case, set the absorbed length to the number of digits in the destination code. The system will
dial out the External # you entered in front of the rest of the number that the user dialed.
Setting up the VoIP schedule to overflow
Once you have configured the routing and destination codes, ensure that the Routing Service
schedule allows fallback (Overflow) and allows you to activate the service from a control set. You
will note that the Routing Service does not have a Normal schedule. This is because the Normal
schedule is the schedule that runs when no routing services are active.
Follow these steps to set up the VoIP schedule for routing services:
1 Rename Schedule 4 to VoIP (Services, Telephony Services, Scheduled Services, Common
Settings, Schedule Names). Refer to the Programming Operations Guide for detailed
instructions about renaming schedules, if required.
2 Open Services, Telephony Services, Scheduled Services, Routing Service, and click VoIP.
The VoIP schedule screen appears in the right frame.
3 Change the Service setting to Manual.
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