System information

FCD 901 48
Issue R2A, 07.2009
XMP1 Release 5.5 System Description
Frame structure
Aastra Proprietary Information Page 2-7
Frames 1 to 15
Frames 1 to 15 transmit the signalling information of the 30 individual
channels
(4 bits per channel). In these frames, the frame alignment signals for traffic
channels 1 to 15 are transmitted in positions 1 to 4, those for traffic channels
16 to 30 in positions 5 to 8.
The following table shows the allocation of the individual frames to traffic
channel signalling.
Table 2.D: Frames 1 to 15
Position 12345678
Bit designation a b c d a b c d
Signalling for traffic channel n n+15
Table 2.E: Allocation of the individual frames to traffic channel signalling
Frame Signalling for traffic channel
1 1 and 16
2 2 and 17
3 3 and 18
4 4 and 19
5 5 and 20
6 6 and 21
7 7 and 22
8 8 and 23
9 9 and 24
10 10 and 25
11 11 and 26
12 12 and 27
13 13 and 28
14 14 and 29
15 15 and 30