Nortel DMS-100 Series Maintenance Manual page 89

Figure 3-3 DS-1 ESF format
Framing bit
Voice channel 1
F 1 2 3 4 5 6 7 8
DS-1 frame
FDL frame 1
FPS = frame pattern sequence
CRC = cyclic redundancy check
FDL = facility data link (not used)
The following table details the extended superframe alignment pattern.
Table 3-2 Extended superframe alignment pattern (Sheet 1 of 2)
Frame number
1
2
3
4
5
6
7
8
9
m = message bits
CB = check bits
Voice channel 2
9 10 11 12 13 14 15 16
DS-1 frame
CRC frame 2 FDL frame 3
Extended superframe
DMS-100 Family NA100 Star Remote System XPM15 and up
Signaling for the Star Remote System 3-5
185 186 187 188 189 190 191 192
FPS frame 4
Framing bit type
FDL
CRC
FDL
FPS
FDL
CRC
FDL
FPS
FDL
Voice channel 24
FPS frame 24
Framing bit value
m
CB1
m
0
m
CB2
m
0
m