A.
Appendix A
Appendix A consists of two tables showing superframe and extended superframe format. The
information for these tables is from the American National Standards Institute (ANSI) specification
T1.403-1989.
Table 2. Superframe Format
Bit Use In Each
signalling Bit
F Bits
Time Slot
Use Options
Frame
Number
Bit
Term
Signal
Traffic
SignalT T
signalling
Number
Frame
Frame
Channel
(F
1
)
(F
2
)
1
0
1
—
1-8
—
—
—
2
193
—
0
1-8
—
—
—
3
386
0
—
1-8
—
—
—
4
579
—
0
1-8
—
—
—
5
772
1
—
1-8
—
—
—
6
965
—
1
1-7
8
—
A
7
1158
0
—
1-8
—
—
—
8
1351
—
1
1-8
—
—
—
9
1544
1
—
1-8
—
—
—
10
1737
—
1
1-8
—
—
—
11
1930
0
—
1-8
—
—
—
12
2123
—
0
1-7
8
—
B
NOTES:
(1) Frame 1 transmitted first.
(2) Frames 6 and 12 are denoted signalling frames.
(3) Option T- Traffic (bit 8 not used for robbed-bit signalling).
IMI89–207
Troubleshooting The DXPT1 Installation
22 – Troubleshooting The DXPT1 Installation