GR 1512 CORE : ISSUE 2
Current
Current
The latest, up-to-date edition.
Gives a view of generic requirements for a Stored Program Control switching System (SPCS) to provide Call Screening (RC) for analog telephone lines. Call Screening is a SPCS service that allows a customer, after having a call forwarded from her or his line, to monitor and then intercept the forwarded call.
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