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TS 09.31 (RAN6)
Location Services (LCS) – Base Station System Application Part LCS Extension (BSSAP-LE)

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(P) GSM Rel-99 v8.7.1  2004/05  48 p.
(P) GSM Rel-98 v7.8.0  2004/05  49 p.

Rapporteur:  ANDERSEN, Niels Peter Skov
See also:

This TS specifies procedures and information coding that are needed to define and support the BSSAP LCS Extension (BSSAP-LE). The BSSAP-LE message set is applicable to the following GSM interfaces defined in TS 03.71:
  • Lb interface (BSC-SMLC).
  • Ls interface (MSC-SMLC).
  • Lp interface (SMLC-SMLC).
This TS defines message formats and encoding for BSSAP-LE and the particular subsets of it that are applicable to each of the above interfaces. This TS also defines the support for BSSAP-LE message transfer on each of these interfaces using CCITT and ANSI versions of SS7 MTP and SCCP. Additional requirements for the above interfaces that are applicable to BSSAP-LE are also defined - e.g. usage of BSSAP (as defined in TS 04.08 and TS 08.08) on the Lb interface.