coMsat Multichannel PRA

Multichannel PRA
These parameters enables the Multichannel PRA to handle dialed numbers in the
local/national/international format.
Example: If you enter the Country Code +49 (automatically sets the trunk prefixes to
0/00) and the area code 621 you can dial the number +4962171481444 in the
formats:
- International: +4962171481444
- National: 062171481444
- Local: 71481444
6.4.5 Calls from PSTN
Figure 38: Parameters for calls from PSTN
The incoming calls from PSTN are normally always routed to the PBX, except when
Handling of calls from PSTN is set to “Reject”, in which case all calls from PSTN
are rejected (if not the caller’s number is in one the white/authorization lists).
6.4.6 Calls from PBX
Figure 39: Parameters for calls from PBX
The B-to-GSM Channel Assignment can be set to “Fixed” to allow the PBX
complete control over the routing. Fixed assignment determines that the first B
channel is assigned to the first GSM channel, the second B channel to the second
GSM channel and so on.
Note: Fixed assignment allows the PBX complete control over the routing. However,
the routing table is still referenced to check if the calls are allowed over a certain
channel. Otherwise the call is rejected with the cause “No channel available”.
If you do not want this kind of verification you must define one single route which is
valid for all prefixes (0,1,2,3,4,5,6,7,8,9) and routes to all channels (1-64) at all times
(0:00-24:00).
If the channels are freely assigned, the call is routed according to the routing table.
If there are several GSM channels (more than one) by which a call from the PBX can
be routed to GSM the Call Distribution to GSM can be made by two ways:
- Balance Number of Calls: The GSM channel with the least number of
calls will get the next call
- Balance Air Time: The GSM channel with the least air time will get the
date: page: file:
15.02.2008 10:32 47 Manual coMsat Multichannel PRA 3-3 eng.doc
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