Bell Canada announces greater flexibility in assigning call types (service selectors) and service identifiers on Megalink (PRI) facilities. Subject to market demand, this capability is expected to become available in IQ'97.

Incoming PSTN calls (other than Inwats or ‘Toll-Free’ Service) have generally been routed over a Megalink facility with a service selector (calltype) of PUBLIC. This precluded the use of a Service Identifier (SID) which could be used by CPE to provide special routing instructions. Service selector FX, which permits the use of a SID, was previously not implemented in Bell Canada. By generic definition, service selector FX is used when the customer’s location is remote from the serving office. The use of service selector FX will now be available for incoming PSTN calls, other than Inwats or ‘Toll-Free’ Service, permitting the use of a SID for these calls. A service selector of FX is specified in the Network Specific Facilities (NSF) Information Element of the Setup message.

Compatibility Impact:

Terminal equipment conforming to Nortel’s Interface document NIS A211-1 version 6 referenced by Bell’s Disclosure Document BID-0005 is not expected to be impacted. Service selector FX with SID is an existing functionality, which will be made available, upon request, for non foreign exchange service. The service selector PUBLIC (no NSF information element) will still be used for PSTN incoming calls when no Service Identifier is required.

Documentation: