934 Matrix PRASAR UCS System Manual
Least Cost Routing-Carrier Pre-Selection
What’s this?
This type of Least Cost Routing is used in countries where the same service provider offers local call and long
distance calling services. These service providers allow subscribers to select the service provider or Carrier for long
distance calling.
For example,
The subscriber of Service Provider A must grab trunk lines of Service Provider A to call other subscribers in the
local area.
However, when the subscriber of Service Provider A wants to make a long distance call, the subscriber must dial a
prefix to select the a carrier (trunk) of the desired long distance, Service Provider B, C and D. Thus, the subscriber
accesses a secondary service provider by dialing a short code or prefix for long distance calling.
This feature works on the basis of “Automatic Number Translation”. Using Automatic Number Translation, PRASAR
UCS adds the code of the appropriate secondary Service Provider to the number string dialed by the extension
user to route the call to the desired secondary Service Provider.
How to configure
To use this feature, you must do the following:
• Select an Automatic Number Translation Table Number from 1 to 8.
• Configure the Automatic Number Translation Table. In the Automatic Number Translation Table, in the
Dialed Number String column, enter the long distance numbers that extension users will dial. In the Add
Prefix column, enter the digits which are to be added as prefix to the Dialed Number string by the system
before dialing it out and in the Strip Digits column enter the number of digit(s) to be stripped off by the
system from the Dialed Number string before dialing it out. For example, the code ‘961’ for Service
Provider B must be prefixed to the number ‘2630555’ dialed by extension users, you must enter ‘2630555’
in the Dialed Number String column, ‘961’ in the Add Prefix column and ‘0’ in the Strip Digits column.
• Enable “Automatic Number Translation” feature on the SIP trunk of your Primary Service Provider in the
“Outgoing Trunk Bundle” and apply the ANT Table number you configured to this OG Trunk Bundle.
• Create “OG Trunk Bundle Group” that includes the OG Trunk Bundle you created with Automatic Number
Translation as member.
Subscriber
System
Service
Provider A
Service
Service
Provider C
Service
Provider D
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