4-128
6
7
8
X
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
9
10
11
12
X
13
14
15
16
X
17
18
19
20
X
21
22
23
24
X
25
26
27
28
X
29
30
31
5
6
DSTi
0
X
1
2
3
4
X
5
DS1
1
2
3
4
MH89770
ST-BUS CHANNEL VERSUS DS1 CHANNEL TRANSMITTED
6
7
8
X
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
9
10
11
12
X
13
14
15
16
X
17
18
19
20
X
21
22
23
24
X
25
26
27
28
X
29
30
31
DSTo
0
X
5
6
1
2
3
4
X
5
DS1
1
2
3
4
22
23
24
ST-BUS CHANNEL VERSUS DS1 CHANNEL RECEIVED
CSTi0
7
X
11
X
15
MC
W1
19
X
23
X
13
14
15
16
17
18
0
1
2
PC PC PC
CW CW CW
1
1
1
6
7
8
9
10
11
12
3
X
4
5
6
PC PC PC
CW CW CW
1
1
1
8
9
10
PC PC PC
CW CW CW
1
1
1
12
13
14
PC PC PC
CW CW CW
1
1
1
16
17
18
PC PC PC
CW CW CW
1
1
1
20
21
22
PC PC PC
CW CW CW
1
1
1
24
25
26
PC PC PC
CW CW CW
1
1
1
19
20
21
27
X
28
29
30
PC PC PC
CW CW CW
1
1
1
22
23
24
31
MC
W2
DS1
1
2
3
4
5
PCCW=Per Channel Control Word, MCW1/2=Master Control Word 1/2
ST-BUS CHANNEL VERSUS DS1 CHANNEL CONTROLLED
CSTi1
7
X
11
X
15
X
8
9
10
PC PC PC
CW CW CW
2
2
2
12
13
14
PC PC PC
CW CW CW
2
2
2
16
17
18
PC PC PC
CW CW CW
2
2
2
13
14
15
10
11
12
7
8
9
0
1
2
PC PC PC
CW CW CW
2
2
2
6
3
X
4
5
6
PC PC PC
CW CW CW
2
2
2
19
X
20
21
22
PC PC PC
CW CW CW
2
2
2
16
17
18
23
X
24
25
26
PC PC PC
CW CW CW
2
2
2
19
20
21
27
X
28
29
30
PC PC PC
CW CW CW
2
2
2
22
23
24
31
X
DS1
1
2
3
4
5
PCCW=Per Channel Control Word
ST-BUS CHANNEL VERSUS DS1 CHANNEL CONTROLLED
7
X
7
8
9
10
11
8
9
10
PCS PCS PCS
W
W
W
11
X
15
12
13
14
16
17
18
PCS PCS PCS MS PCS PCS PCS
W
W
W W1 W
W
W
12
13
14
15
19
X
20
21
22
PCS PCS PCS
W
W
W
16
17
18
23
X
24
25
26
PCS PCS PCS
W
W
W
19
20
21
27
X
31
28
29
30
PCS PCS PCS MS
W
W
W W2
22
23
24
CSTo
3
0
1
2
PCS PCS PCS PS
W
W
W W
6
4
5
6
PCS PCS PCS
W
W
W
DS1
1
2
3
4
5
PCSW=Per Channel Status Word, PSW=Phase Status Word, MSW=Master Status Word
ST-BUS VERSUS DS1 CHANNEL STATUS
Figure 3 - ST-BUS Channel Allocations
Preliminary Information
X = UNUSED
MITEL [ MITEL NETWORKS CORPORATION ]
