This TS specifies the layer 3 procedures used on the Base Station System (BSS) to Mobile-services Switching Centre (MSC) interface for control of GSM services.
For the purposes of call control and mobility management, messages are not interpreted at the Base Station System
(BSS) which acts as a relay function. These messages and procedures are documented in TS 24.008
, the only
relevant issues covering these messages in the present document are those concerned with error conditions at the
interface, and the headers that are required for the correct addressing of the messages. This is specified in more detail in
The functional split between MSC and BSS is defined in TS 48.002
and states that the BSS is responsible for
local radio resource allocation and in order to support this the required procedures between BSS and MSC are defined
in detail in the present document.
also states that the BSS is responsible for the scheduling of all CCCH/BCCH messages and therefore
some procedures for providing the BSS with the necessary information to be passed on these channels for individual
calls (i.e. paging) are defined in the present document, but the scheduling is not discussed.
This interface and consequently these layer 3 procedures are designed to support BSSs providing one or more cells.
short Table of Contents for TS 48.008 Word version: 15.0.0
each title links to the equivalent title in the full ToC