Write about the signaling format and message structure in TDMA

Signalling Format in Different Channels: A reverse digital traffic channel (RDTC) is used to transport user information and signalling. A forward digital traffic channel (FDTC) has same format as the RDTC (reverse digital traffic channel). Two control channels are used: the FACCH is a blank and burst channel, the SACCH is a continuous channel, and interleaving is on the SACCH. The signalling formats of these two channels are shown in Fig.6.

Message Structure:

All messages contain:

1. An application message header

2. Mandatory fixed parameters

3. Mandatory variable parameters

4. Remaining length

5. Optional variable parameters