IP Multimedia subsystem

[karna]

Good day,

While reading about IP Multimedia subsytem i came across a good book which i am sharing here(no pw).
Content:
Architecture of the IMS

Moving from Legacy to Convergence

Session Initiation Protocol (SIP)
Addressing in the IMS

Establishing a Session in the IMS

Security Procedures in the IMS

Thanks,
Karna
Pls add reps if you like