F-SMSC is a combination of software and hardware which is modular, scalable, reliable and based on Client/Server architecture. Its responsibility is primarily based on reception, archiving and forwarding of short messages between entities which have the capability of manipulating (reception, archiving and forwarding) of short messages (Short Message Entities – SMEs)
F-SMSC is located in PSTN networks and it manages processes of sorting messages into waiting queues, such as billing the sender or sending status report if requested. F-SMSC enables transmission of alphanumeric or binary messaged from or to fixed subscriber. Its main purpose is short messages, but it can also be used for other purposes. Message exchange between F-SMSC and fixed users that use analogue phone is done with FSK modulation according to ETSI standard ES 201 912 V.1.1.1, ES 201 986 V.1.1.2 and TS 103 912 V.1.2.1.
F-SMSC is reliable in terms of mistake detection, 24/7 availability, on-line configuration, active database maintenance, robust and reliable hardware components that do not take a lot of space.
Integration of F-SMSC platform with STP nodes is done with connecting E1 links (one on each station) which creates logical connection between platform and STP nodes.
Integration with VAS and MSMS platforms is done with SMPP connection which creates logical connection between F-SMSC platforms, mobile SMSC and other VAS platforms. F-SMSC platform is integrated with Billing through Intranet network.
Interfaces and protocols to external applications with appropriate licenses are:
Connections of F-SMSC systems with other network elements are unchanged.
SMS network architecture with interfaces and protocols is shown on Picture 2.