MT9076
Preliminary Information
21.4
Per Channel Receive signaling (Pages 9 and 0AH) (E1)
Page 09H, addresses 10001 to 11111, and page 1AH addresses 10001 to 11111 contain the Receive signaling
Control Words for CAS channels 2 to 16 and 18 to 32. Table 154 illustrates the mapping between the
addresses of these pages and the CAS channel numbers. Table 155 describes bit allocation within each of
these registers.
Page 9 Address:
0
0
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10 11 12 13 14 15
10 11 12 13 14 15
Equivalent PCM 30
Timeslots
Page A Address:
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
Equivalent PCM 30
Timeslots
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Table 153 - Page 9, A Address Mapping to CAS Channels (E1)
Bit
Name
Functional Description
7 - 4
3 - 0
- - -
Unused
A(n)
B(n)
C(n)
D(n)
Receive signaling Bits for Channel n. These bits are received on the PCM 30 2048 kbit/
sec. Link in bit positions one to four of time slot 16 in frame n (where n = 1 to 30) and are the
A, B, C, D signaling bits associated with channel n.
Table 154 - Receive Channel Associated signaling (Pages 9 and A) (E1)
Serial per channel receive signaling status bits appear on ST-BUS stream CSTo. Table 156 describes the bit
allocation within each of the 30 active ST-BUS time slot of CSTo.
Bit
Name
Functional Description
7 - 4
A(n),
B(n),
C(n),
D(n)
Transmit signaling Bits for Channel n. These bits are transmitted on the PCM 30 2048 kbit/
sec. Link in bit positions one to four of time slot 16 in frame n (where
n = 1 to 15), and are the A, B, C, D signaling bits associated with channel n.
3 - 0
A(n),
B(n),
C(n),
D(n)
Transmit signaling Bits for Channel n. These bits are transmitted on the PCM 30 2048 kbit/
sec. Link in bit positions one to four of time slot 16 in frame n (where
n = 1 to 15), and are the A, B, C, D signaling bits associated with channel n.
Table 155 - Receive CAS Channels (CSTo) (E1)
126
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