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Chapter 4, "Message structure and functions," defines the purpose of
each of the mandatory information elements and other information
elements of messages; describes messages supported for PRI call
processing and their role in call processing. Included are detailed
definitions of Q.931 and Q.932 messages' information elements
Chapter 5, "Call control procedures," describes the call control
procedures used to set up and take down PRI calls, including user or
network parameters.
Chapter 6, "PRI interworking," lists the interworking of PRI to various
agents, and describes enhanced digital recorded announcements and PRI
to ISUP interworking.
Chapter 7, "Feature interaction," describes the services and features
supported on the PRI interface, including RLP/ATP and Fraud Call
Interrupt.
Chapter 8, "Dialable Wideband Service," describes how Dialable
Wideband Service works, including hardware, translation and routing,
and datafilling.
Chapter 9, "Datafill and subscription parameters," provides information
on database correlation and describes interdependencies of tables and
datafill order; describes subscription parameter relationships, including
facility, service, and integrated access parameters.
Chapter 10, "Service verification," outlines the verification of the
various services and describes steps that guarantee services function
properly and steps to isolate problems.
Chapter 11, "Engineering recommendations," provides recommendations
to simplify the configuration and engineering of the ISDN digital trunk
controller PRI.
Chapter 12, "DS-1 to DS-30 channel mapping," provides tables that
show mapping of the DS-1 channel to the DS-30.
Chapter 13, "ETSI PRI," describes the differences between North
American PRI and European PRI functionality.
Chapter 14, "NCAUUI" (Non Call Associated User to User
Information), describes the service that provides PRI users at the same
switch with user–to–user communication.
Chapter 15, "NCAUUI (Two switch scenario)," provides a two switch
scenario of the activated NCAUUI feature.
Chapter 16, "PRI Connected Number Transport," describes the flow of
PRI Connected Number Transport across the network.
Chapter 17, "PRI Progress Indicator Transport," outlines the purpose of
the progress indicator and maps its location in relation to the originating
switch.
297-2521-106 Standard 23.01 March 2001
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