7 Split/Combine and Padding Functions

08.203GPPRate Adaptation on the Base Station System - Mobile Service Switching Centre (BSS-MSC) InterfaceTS

The Split/Combine-function in the IWF shall be used in cases when up to and including 4substreams are used.

The Split/Combine-function in the BSS shall be used only when more than four substreams are used.

7.1 Data Frame distribution into the channels by the Split/Combine function

Described in 3GPP TS 04.21

7.2 Substream numbering

Described in 3GPP TS 04.21

7.3 Initial Substream Synchronisation for Transparent Services

Described in 3GPP TS 04.21

7.4 Frame Synchronisation and Action on loss of Synchronisation

When in the IWF, the Split/Combine function is responsible for controlling the initial frame synchronisation procedure and re-synchronisation procedure as described in 3GPP TS 29.007.

7.5 Network Independent Clocking

NIC is specified in 3GPP TS 04.21

7.6 Padding

Padding is specified in 3GPP TS 04.21