User's Manual 464 Document #: LTRT-89730
Mediant 3000
Table 23-2: Trunk Group Settings Table Parameter Descriptions
Parameter Description
Index
[TrunkGroupSettings_Index
]
Defines an index number for the new table row.
Note: Each row must be configured with a unique index.
Name
[TrunkGroupSettings_Trunk
GroupName]
Defines an arbitrary name to easily identify the row. The name
represents the Trunk Group in the SIP 'tgrp' parameter in outgoing
INVITE messages (according to RFC 4904). For example:
sip:+16305550100;tgrp=TG-1;trunk-context=+1-
630@isp.example.net;user=phone
The valid value can be a string of up to 40 characters. By default, no
name is configured.
Notes:
 Each row must be configured with a unique name.
 If the parameter is not configured, the Trunk Group decimal number
is used in the SIP 'tgrp' parameter.
 The feature is enabled by any of the following parameters:
UseSIPtgrp
Trunk Group ID
[TrunkGroupSettings_Trunk
GroupId]
Defines the Trunk Group ID that you want to configure.
Channel Select Mode
[TrunkGroupSettings_Chan
nelSelectMode]
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] 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] 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] 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.
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