Medias Mediatrix 1204, Reference Manual

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Chapter 15 - Line Configuration Line Selection Algorithm
198 Mediatrix 1204
Line Selection Algorithm
Upon receiving a call, you can define in which way the Mediatrix 1204 selects a line to distribute the call load
across all lines. Before accepting to use a line, the Mediatrix 1204 must check the following:
The line’s administrative status is idle.
The line is configured to allow IP to SCN calls.
If the above three criteria are met, the line can be used to place a call, otherwise the IP to SCN call is rejected.
X
To define how to use lines:
1. In the lineGroupingMIB , locate the lineGroupingGroupConfigTable group.
2. Set the algorithm to select a line on an incoming IP to SCN call in the
lineGrpConfLineSelectionAlgorithm variable.
3. If applicable, enable the call forward on no resource mechanism by setting the
lineGrpConfCallForwardNoRessourceEnable to enable .
This mechanism reroutes an incoming IP to SCN call in the event that all the lines are unavailable.
The call is rerouted to the destination specified in the
lineGrpConfCallForwardNoRessourceAddress variable.
4. Set the number to call when all lines are unavailable in the
lineGrpConfCallForwardNoRessourceAddress variable.
Accepted formats are:
• telephone numbers (5551111)
• SIP URLs such as ”scheme:user@host”. For instance, “sip:user@foo.com”.
This string is used literally, so cosmetic symbols (such as the dash in “555-xxxx”) should not be
present.
5. Restart the Mediatrix 1204 so that the changes may take effect.
Table 122: Line Selection Algorithm
Algorithm Description
roundRobin The unit starts from the line that follows the line used for the last IP to
SCN call. For instance, if line #1 was used in the last call, the unit starts
with line #2. Going toward the highest line, the unit selects the first line
available. If the highest line is unavailable, the search continues from
the lowest line number of the group to the line used for the last IP to
SCN call.
lowToHigh Starting from the lowest line number and going toward the highest line
number, the unit selects the first line available.
highToLow Starting from the highest line number and going toward the lowest line
number, the unit selects the first line available.