MT9074
Advance Information
Per Channel Receive Signalling (T1 and E1 mode) (Pages 9 and 0AH)
Page 09H, addresses 10000 to 11111, and page 1AH addresses 10000 to 10111 contain the Receive
Signalling Control Words for DS1 channels 1 to 16 and 17 to 24 respectively. Table 76 illustrates the mapping
between the addresses of these pages and the DS1 channel numbers. Table 77 describes bit allocation within
each of these registers.
Page 9 Address:
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
Equivalent DS1
channel
10 11 12 13 14 15 16
Page A Address:
0
1
2
3
4
5
6
7
8
x
9
x
10 11 12 13 14 15
Equivalent DS1
channel
17 18 19 20 21 22 23 24
x
x
x
x
x
x
Table 76 - Page 9, A Address Mapping to DS1 Channels (T1)
Bit
Name
Functional Description
Unused
7 - 4
3
- - -
A(n)
Receive Signalling Bits A for Channel n. These bits are extracted from bit
position 8 of every channel in received frame 6 (within the 12 frame superframe
structure for D4 superframes and the 24 frame structure for ESF superframes). The
bits may be debounced for 6 to 9 milliseconds where control bit DBNCE is set high.
3
2
0
B(n)
C(n)
D(n)
Receive Signalling Bits B for Channel n. These bits are extracted from bit
position 8 of every channel in received frame 12 (within the 12 frame superframe
structure for D4 superframes and the 24 frame structure for ESF superframes). The
bits may be debounced for 6 to 9 milliseconds where control bit DBNCE is set high.
Receive Signalling Bits C for Channel n. These bits are extracted from bit
position 8 of every channel in received frame 18 within the 24 frame structure for
ESF superframes. The bits reported may be debounced for 6 to 9 milliseconds
where control bit DBNCE is set high. In D4 mode these bits are unused.
Receive Signalling Bits D for Channel n. These bits are extracted from bit
position 8 of every channel in received frame 24 within the 24 frame structure for
ESF superframes. The bits reported may be debounced for 6 to 9 milliseconds
where control bit DBNCE is set high. In D4 mode these bits are unused.
Table 77 - Receive Channel Associated Signalling (Pages 9 and A) (T1)
68
MITEL [ MITEL NETWORKS CORPORATION ]
