ITU-T Q.3053 PDF

This Recommendation specifies the signalling architecture for Internet protocol (IP) based short message service (SMS) over next generation network (NGN), and identifies the signalling requirements for the interworking between NGN and mobile networks supporting SMS.

The IP-based short message over NGN is encapsulated in accordance with the SMS layer defined in [ETSI TS 124 011].

With regard to SMS over mobile networks, this Recommendation conforms to [ETSI TS 123 040] and [TIA-637] which specifies the technical implementation of SMS in circuit switch (CS) domain of GSM/UMTS networks and cdma2000 network.