CONTENTS

�1���� Scope
�2���� Normative references
�3���� Definitions
������� 3.1���� Entities
������� 3.5���� Numbers
������� 3.6���� Networks
������� 3.7���� Exchanges
������� 3.8���� Other definitions
�4���� Abbreviations
�5���� Objectives
�6���� Classification of Number Portability
������� 6.1���� Location Portability
������� 6.2���� Service Portability
������� 6.3���� Service Provider Portability
������� 6.4���� Concatenation of types of Number Portability
������� 6.5���� Number Portability domains
�7 ����Generic assumptions for Number Portability
������� 7.1���� General
������� 7.2���� How is Number Portability generically performed
������� 7.3���� Implications of Number Portability
�8���� High-level network models for Service Provider Portability of Geographic Numbers
������� 8.1���� Background information
������� 8.2���� General introduction to described models
������� 8.3���� Call re-routing initiated/performed by Donor Network
����������������� 8.3.1���� Call re-routed from Donor Network by use of onward routing principles
������� 8.4���� Call re-routing initiated/performed by Transit Network prior to Donor Network
����������������� 8.4.1���� Re-routing initiated by "All call query one-step" principles
������� 8.5���� Call re-routing performed by Originating Network
����������������� 8.5.1���� Re-routing initiated by "All call query one-step" principles
������� 8.6���� Call re-routing to Recipient performed by a two-step number translation principle
����������������� 8.6.1���� General description
��� ��������������8.6.2���� Onward routing by Donor combined with query by Recipient Network
����������������� 8.6.3���� "All call query" by Transit Network combined with query by Recipient Network
����������������� 8.6.4���� "All call query" by Originating Network combined with query by Recipient Network
����������������� 8.6.5���� Interaction with supplementary services
����������������� 8.6.6���� Interaction with IN-based services
����������������� 8.6.7���� Interaction with carrier selection
�������������� ���8.6.8���� Interaction with statistical counters
����������������� 8.6.9���� Required Forward information transfer between Networks
���������������� 8.6.10���� Required backward information transfer between networks
���������������� 8.6.11���� NP routing loop detection issues
������� 8.7���� Call re-routing performed by using "All call query all involved networks" principles
����������������� 8.7.1���� General description
����������������� 8.7.2���� Interaction with supplementary services
��������������� ��8.7.3���� Interaction with IN-based services
����������������� 8.7.4���� Interaction with carrier selection
����������������� 8.7.5���� Interaction with statistical counters
����������������� 8.7.6���� Required forward information transfer between networks
����������������� 8.7.7���� Required backward information transfer between networks
����������������� 8.7.8���� NP routing loop detection issues
�9���� Network architecture for non-circuit-related signalling support for ported Geographic Numbers
������ �9.1���� Background information
������� 9.2���� Addressing requirements for routing of non-circuit-related messages
������� 9.3���� Network architecture models
����������������� 9.3.1���� Non-circuit-related message re-routing by the Donor Network/Exchange
����������������� 9.3.2���� Non-circuit-related message re-routing by the Originating Network/Exchange
����������������� 9.3.3���� Non-circuit-related message re-routing at the SPR
10���� Generic Distributed Functional Entity Model for Number Portability
������ 10.1���� General information
������ 10.2���� Call Control Function (CCF)
������ 10.3���� Call Control Portability Function (CCPF)
������ 10.4���� Number Portability Control Function (NPCF)
������ 10.5���� Number Portability Data Function (NPDF)
��� ���10.6���� Number Portability Management Function (NPMF)
������ 10.7���� Master Number Portability Management Function (M-NPMF)
11���� Service Provider Portability for Non-Geographic Numbers (NGNP)
12���� Concatenation of Service Provider Portability for Non-Geographic Numbers (NGNP) and Geographic Numbers (GNP)
13���� Routing and addressing of calls towards portable numbers
14���� Routing and addressing for calls from portable numbers
Annex A � IN support for Service Provider Portability of Geographic Numbers
������� A.1���� General information
������� A.2���� IN trigger conditions, circuit-related signalling to Geographic Numbers
����������������� A.2.1���� General information
������� A.3���� IN trigger conditions, non-circuit-related signalling to Geographic Numbers