3Com VCX V7122 User Manual page 64

Figure 28 Trunk Group Settings Screen
2 In the Routing Index drop-down list, select the range of entries that you want to edit (up
to 24 entries can be configured).
3
In the Trunk Group ID field, enter the Trunk Group ID number.
4 In the Channel Select Mode drop-down list, select the Channel Select Mode that
determines the method in which new calls are assigned to B-channels within the Trunk
groups entered in the field to the right of this field. For information on available Channel
Select Modes see
5
Repeat steps 4 and 5, for each defined Trunk group.
6 Click the Submit button to save your changes.
7
To save the changes so they are available after a power fail, see
page 88.
Table 20 Channel Select Modes
Mode
By phone number
Cyclic Ascending
Ascending
64
Table 20.
Description
Select the gateway port according to the called number (see the
note below).
Select the next available channel in an ascending cycle order.
Always select the next higher channel number in the Trunk Group.
When the gateway reaches the highest channel number in the
Trunk Group, it selects the lowest channel number in the Trunk
Group and then starts ascending again (default).
Select the lowest available channel. Always start at the lowest
channel number in the Trunk Group and if that channel is not
available, select the next higher channel.
3Com VCX V7122 SIP VoIP Gateway User Manual
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