Matrix ETERNITY NE System Manual 941
Least Cost Routing - Carrier Pre-Selection
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,
A 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, SARVAM
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 configure the Automatic Number Translation (ANT) table on the desired trunks—CO,
Mobile or SIP. See Automatic Number Translation (ANT) under “CO Trunks”, “Mobile Trunks” and “SIP Trunks”
for instructions.
Subscriber
PBX
Service
Provider A
Service
Service
Provider C
Service
Provider D
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