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ECMA/TR 91 : 1ED 2005
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ENTERPRISE COMMUNICATION IN NEXT GENERATION CORPORATE NETWORKS (NGCN) INVOLVING PUBLIC NEXT GENERATION NETWORKS (NGN)
12-01-2013
1 Scope
2 References
3 Definitions
3.1 Corporate telecommunication Network (CN) [2]
3.2 Next Generation CN (NGCN)
3.3 Next Generation Network (NGN)
3.4 Virtual Private Network (VPN) [1]
3.5 Application Service Provider (ASP)
3.6 Session Service Provider (SSP)
3.7 Transport Service Provider (TSP)
4 Abbreviations
5 Background
5.1 Provision of services by NGNs
5.2 Management considerations
6 Basic Configurations and General Requirements
6.1 Scenario 1 - Communication between NGCNs via
an NGN using a VPN
6.2 Scenario 2 - Communication between NGCNs via
an NGN not using a VPN
6.3 Scenario 3 - Communication between NGCN and TE
via an NGN using a VPN
6.4 Scenario 4 - Communication between NGCN and TE
via an NGN not using a VPN
6.5 Scenario 5 - Communication between NGCN and
PSTN/ISDN via an NGN
6.6 General requirements on NGNs
6.7 General requirements on NGNs concerning measures
for compliance with regulations
7 Technical issues and requirements on NGN related to
session service provision
7.1 Signalling architecture
7.2 NAT traversal
7.3 Firewall traversal
7.4 Identification
7.5 Provision of identification information
7.6 Security
7.7 Session policy
7.8 Emergency calls
7.9 Geographic location
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