Appendix A
CX28394/28395/28398
A.4 Extended Superframe Format (ESF)
Quad/x16/Octal—T1/E1/J1 Framers
Table A-4. Extended Superframe Format
Bit Use in Each
Time Slot
F-Bits
DL
Signaling Channel
Frame #
Bit #
FPS
CRC
Traffic
Sig
16
4
2
1
2
0
—
—
—
0
m
—
m
—
C1
—
—
—
C2
—
—
—
C3
—
—
—
C4
—
—
—
C5
—
—
—
C6
—
—
1–8
1–8
1–8
1–8
1–8
1–7
1–8
1–8
1–8
1–8
1–8
1–7
1–8
1–8
1–8
1–8
1–8
1–7
1–8
1–8
1–8
1–8
1–8
1–7
—
—
—
—
—
8
—
—
—
—
—
A
—
—
—
—
—
A
—
—
—
—
—
A
193
3
386
4
579
—
m
5
772
—
—
—
0
6
965
—
m
7
1158
1351
1544
1737
1930
2123
2316
2509
2702
2895
3088
3281
3474
3667
3860
4053
4246
4439
—
—
—
—
—
8
—
—
—
—
—
B
—
—
—
—
—
B
—
—
—
—
—
A
8
—
m
9
—
—
—
1
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Note(s):
—
m
—
m
—
—
—
0
—
—
—
—
—
8
—
—
—
—
—
C
—
—
—
—
—
A
—
—
—
—
—
A
—
m
—
m
—
—
—
1
—
m
—
—
—
—
—
8
—
—
—
—
—
D
—
—
—
—
—
B
—
—
—
—
—
A
—
m
—
—
—
1
—
m
—
1. FPS indicates the Framing Pattern Sequence (...001011...).
2. DL indicates the 4Kbps Data Link with message bits m.
3. CRC indicates the cyclic redundancy check with bits C1 to C6.
4. Signaling options include 16 state, 4 state, and 2 state.
A-6
Conexant
100054E