AudioCodes Mediant 500 MSBR, User Manual

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Version 7.2 489 Mediant 500 MSBR
User's Manual 26. Trunk Groups
Parameter Description
Channel Select Mode
channel-select-mode
[TrunkGroupSettings_Cha
nnelSelectMode]
Defines the method by which IP-to-Tel calls are assigned to the
channels of the Trunk Group.

[0] By Dest Phone Number = The channel is selected according
to the called (destination) number. If the number is not located,
the call is released. If the channel is unavailable (e.g., busy), the
call is put on call waiting (if call waiting is enabled and no other
call is on call waiting); otherwise, the call is released.

[1] Channel Cyclic Ascending = The next available channel in the
Trunk Group, in ascending cyclic order is selected. After the
device reaches the highest channel number in the Trunk Group, it
selects the lowest channel number in the Trunk Group, and then
starts ascending again.

[2] Always Ascending = The lowest available channel in the Trunk
Group is selected, and if unavailable, the next higher channel is
selected.

[3] Cyclic Descending = The next available channel in descending
cyclic order is selected. The next lower channel number in the
Trunk Group is always selected. When the device reaches the
lowest channel number in the Trunk Group, it selects the highest
channel number in the Trunk Group, and then starts descending
again.

[4] Always Descending = The highest available channel in the
Trunk Group is selected, and if unavailable, the next lower
channel is selected.

[5] Dest Number & Cyclic Ascending = The channel is selected
according to the called number. If the called number isn't found,
the next available channel in ascending cyclic order is selected.
Note: If the called number is located, but the port associated with
the number is busy, the call is released.

[6] By Source Phone Number = The channel is selected
according to the calling number.

[7] Trunk Cyclic Ascending = The channel from the first channel of
the next trunk (adjacent to the trunk from which the previous
channel was selected) is selected. This option is applicable only
to digital interfaces.

[8] Trunk & Channel Cyclic Ascending = The device implements
the Trunk Cyclic Ascending and Cyclic Ascending methods to
select the channel. This method selects the next physical trunk in
the Trunk Group, and then selects the B-channel of this trunk
according to the Cyclic Ascending method (i.e., selects the
channel after the last allocated channel). This option is applicable
only to digital interfaces.
For example, if the Trunk Group includes two physical trunks, 0
and 1:

For the first incoming call, the first channel of Trunk 0 is
selected.

For the second incoming call, the first channel of Trunk 1 is
selected.

For the third incoming call, the second channel of Trunk 0 is
selected.

[9] Ring to Hunt Group = The device allocates IP-to-Tel calls to all
the FXS ports (channels) in the Trunk Group (i.e., a ringing