ABSTRACT
Introduction.......................................................................................................... 243 Data.Structure...................................................................................................... 245 Distributed.HSS.(HSS.DHT).............................................................................. 247
Data.Replication..........................................................................................250 Registration.................................................................................................250 Network.Operation.................................................................................... 251 Improvements............................................................................................. 252
Distributed.I/S-CSCF.(I/S-CSCF.DHT)........................................................... 252 Co-Locating.the.Presence.Server.to.the.I/S-CSCF.Node......................254
Using.the.I/S-CSCF.DHT.with.the.HSS.DHT.................................................255 Distributed.IMS.Architecture............................................................................256 Comparison.......................................................................................................... 260 Conclusions.......................................................................................................... 261 References............................................................................................................. 262
