13GPP2 A. S008-C, Interoperability Specification (IOS) for High Rate Packet Data(HRPD)Radio Access Network Interfaces with Session Control in the Access Network[S]. Aug 2007.
23GPP2 X. S0042-0 vl.0, Voice Call Continuity Between IMS and Circuit Switched Systems[S]. Oct 2007.
33GPP2 A. S0014-C v2.0, Interoperability Specification(IOS)for CDMA2000 Access Network Interfaces-Part 4(Al,hlp, h2, and A5 Interfaces) (IOS vS. 0.1) [S]. Jan 2006.
