Appendix A
Bt8370/8375/8376
A.3 SLC 96 Format (SLC)
Fully Integrated T1/E1 Framer and Line Interface
A.3 SLC 96 Format (SLC)
SLC framing mode allows synchronization to the SLC 96 data link pattern. This
pattern, which is described in the Bellcore TR-TSY-000008, contains both
signaling information and a framing pattern that overwrites the Fs bit of the SF
framer pattern (Table A-1). See Table A-3 for SLC-96 Fs bit contents.
Table A-3. SLC-96 Fs Bit Contents
Frame #
Fs Bit
Frame #
Fs Bit
Frame #
Fs Bit
2
4
0
0
26
28
30
32
34
36
38
40
42
44
46
48
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
0
50
52
54
56
58
60
62
64
66
68
70
72
0
M1
M2
M3
A1
A2
S1
S2
S3
S4
1
6
1
8
1
10
12
14
16
18
20
22
24
Note:
1
0
0
0
1
1
1
C1
1
0
1. The SLC-96 frame format is similar to that of SF as shown in Table A-1 with the
exceptions shown in this table.
2. C1 to C11 are concentrator field bits.
3. M1 to M3 are maintenance field bits.
4. A1 and A2 are alarm field bits.
5. S1 to S4 are line switch field bits.
6. The Fs bits in frames 46, 48, and 70 are spoiler bits which are used to protect against
false multiframing.
A-4
Conexant
N8370DSE
CONEXANT [ CONEXANT SYSTEMS, INC ]
