參數(shù)資料
型號: T7230A
廠商: Lineage Power
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 47/110頁
文件大小: 752K
代理商: T7230A
Preliminary Data Sheet
June 1997
T7230A Primary Access Framer/Controller
43
Lucent Technologies Inc.
Frame Formats
(continued)
CEPT Time Slot 16 Multiframe Structure
(continued)
IRSM Signaling
This signaling mode is similar to the channel associated signaling mode, i.e., time slot 16 contains the signaling
multiframe information (ABCD signaling bits). In addition, time slot 0 Sa5 to Sa8 bit positions of the NOT FAS frame
contains per-channel control information. The format of the time slot 0 per-channel control information is illustrated
in Table 21. The IRSM mode forces the transmit framer to align the time slot 16 multiframe to the FAS frame (PCS0
mode).
Table 21. CEPT IRSM Signaling Multiframe Structure
Notes:
Si = time slot 0 control bits. If programmed for CRC-4 mode, then these bits contain the CRC-4 multiframe pattern, checksum, and E-bit
information.
Ei = IRSM per-channel control bits.
X0—X2 = time slot 16 spare bits.
Ai—Di = time slot 16 channel associated signaling bits.
Frame
Number
IRSM Bits in Time Slot 0
3
4
5
0
1
1
A
D
E
0
0
1
1
A
D
E
2
0
1
1
A
D
E
4
0
1
1
A
D
E
6
0
1
1
A
D
E
8
0
1
1
A
D
E
10
0
1
1
A
D
E
12
0
1
1
A
D
E
14
Bits in Time Slot 16
4
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
8
D
9
D
10
D
11
D
12
D
13
D
14
D
15
1
S
i
S
i
S
i
S
i
S
i
S
i
S
i
S
i
S
i
S
i
S
i
S
i
S
i
S
i
S
i
S
i
2
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
6
0
7
1
8
1
1
0
2
0
B
1
B
2
B
3
B
4
B
5
B
6
B
7
B
8
B
9
B
10
B
11
B
12
B
13
B
14
B
15
3
0
5
6
7
8
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
X
0
A
17
A
18
A
19
A
20
A
21
A
22
A
23
A
24
A
25
A
26
A
27
A
28
A
29
A
30
A
31
Y
M
B
17
B
18
B
19
B
20
B
21
B
22
B
23
B
24
B
25
B
26
B
27
B
28
B
29
B
30
B
31
X
1
C
17
C
18
C
19
C
20
C
21
C
22
C
23
C
24
C
25
C
26
C
27
C
28
C
29
C
30
C
31
X
2
D
17
D
18
D
19
D
20
D
21
D
22
D
23
D
24
D
25
D
26
D
27
D
28
D
29
D
30
D
31
E
1
0
E
3
0
E
5
0
E
7
0
E
9
0
E
11
0
E
13
0
E
15
E
16
1
E
18
1
E
20
1
E
22
1
E
24
1
E
26
1
E
28
1
E
30
E
17
1
E
19
1
E
21
1
E
23
1
E
25
1
E
27
1
E
29
1
E
31
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
A
10
A
11
A
12
A
13
A
14
A
15
C
1
C
2
C
3
C
4
C
5
C
6
C
7
C
8
C
9
C
10
C
11
C
12
C
13
C
14
C
15
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