ECMA 176 : 4ED 2001

1 Scope
2 Conformance
3 References (normative)
4 Definitions
  4.1 External definitions
  4.2 Other definitions
      4.2.1 Branching PINX
      4.2.2 Cooperating PINX
      4.2.3 End PINX
      4.2.4 Preceding PINX
      4.2.5 Replaced connection
      4.2.6 Requesting PINX
      4.2.7 Retained connection
      4.2.8 Subsequent PINX
      4.2.9 Inviting PINX
5 List of acronyms
6 Signalling protocol for the support of ANF-PR
  6.1 ANF-PR description
  6.2 ANF-PR operational requirements
      6.2.1 Requirements on the Cooperating PINX
      6.2.2 Requirements on the Requesting PINX
      6.2.3 Requirements on a Transit PINX
      6.2.4 Requirements on the Inviting PINX
  6.3 ANF-PR coding requirements
      6.3.1 Operations
      6.3.2 Information elements
      6.3.3 Messages
  6.4 ANF-PR state definitions
      6.4.1 States at the Requesting PINX
      6.4.2 States at the Cooperating PINX
      6.4.3 States at a Transit PINX on the retained path,
             including the branching PINX
      6.4.4 States at the Inviting PINX
  6.5 ANF-PR signalling procedures
      6.5.1 Actions at the Requesting PINX
      6.5.2 Actions at the Cooperating PINX
      6.5.3 Actions at a Cooperating/Requesting PINX in
             the case of a trombone connection
      6.5.4 Actions at a Transit PINX
      6.5.5 Actions at Inviting PINX
  6.6 ANF-PR optional signalling procedures for retention of
      part of the old connection
      6.6.1 Actions at the Requesting PINX
      6.6.2 Actions at the Cooperating PINX
      6.6.3 Actions at a Transit PINX on the retained
             connection
      6.6.4 Actions at a Transit PINX on the new connection
             or replaced connection
      6.6.5 Actions at Inviting PINX on the retained connection
  6.7 ANF-PR impact of interworking with public ISDNs
  6.8 ANF-PR impact of interworking with non-ISDNs
  6.9 Protocol interactions between ANF-PR and other
      supplementary services and ANFs
      6.9.1 Interaction with Calling Name Identification
             Presentation (SS-CNIP)
      6.9.2 Interaction with Connected Name Identification
             Presentation (SS-CONP)
      6.9.3 Interaction with Completion of Calls to Busy
             Subscriber (SS-CCBS)
      6.9.4 Interaction with Completion of Calls on No Reply
             (SS-CCNR)
      6.9.5 Interaction with Call Transfer (SS-CT)
      6.9.6 Interaction with Call Forwarding Unconditional
             (SS-CFU)
      6.9.7 Interaction with Call Forwarding Busy (SS-CFB)
      6.9.8 Interaction with Call Forwarding No Reply (SS-CFNR)
      6.9.9 Interaction with Call Deflection (SS-CD)
 6.10 ANF-PR parameter values (timers)
      6.10.1 Timer T1
      6.10.2 Timer T2
      6.10.3 Timer T3
      6.10.4 Timer T4
Annex A - Protocol Implementation Conformance Statement
          (PICS) proforma
Annex B - Imported ASN.1 definitions
Annex C - Examples of message sequences
Annex D - Specification and Description Language (SDL)
          representation of procedures
Annex E - ASN.1 definitions according to ITU-T Recs. X.208/X.209

Defines signalling protocol for supporting the Path Replacement additional network feature (ANF-PR) at the Q reference point between Private Telecommunication Network Exchanges (PTNXs) connected within a Private Telecommunication Network (PTN). This feature is applicable to an established call, permitting the replacement of the connection of that call by a new connection.