Table of Contents
SIP and the application of SIP as used in 3GPP
Overview of the 3GPP IM CN subsystem architecture
Overall 3GPP architecture
GPRS - user plane versus transport plane
GPRS - Transport of user IP packets in UMTS
3GPP requires multiple outbound proxies
Example allocation of functional entities - mobile to mobile
Example allocation of functional entities - PSTN to mobile
Example allocation of functional entities - mobile to PSTN
Provision of services
Summary of architecture
Key 3GPP documents and their location on 3GPP servers
Issues for SIP
Multiple outbound proxies - path
Compression
Other issues still in discussion at requirements level
Questions
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