GR 691 CORE : ISSUE 1
Current
The latest, up-to-date edition.
LSSGR: FACILITY/SERVICE SELECTIVE DIALLING SWITCHING AND SIGNALLING REQUIREMENTS
12-01-2013
Defines the generic requirements for processing calls that apply FSS options. The document specifies the FSS dialing procedure and the associated switching and multifrequency signaling requirements needed to define FSS call processing.
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