參數(shù)資料
型號(hào)： T7698
廠商： Lineage Power
英文描述： Quad T1/E1 Line Interface and Octal T1/E1 Monitor(四T1/E1線接口和八T1/E1監(jiān)控器)
中文描述： 四T1/E1線路接口和八路的T1/E1監(jiān)視器（四個(gè)T1/E1線接口和八T1/E1的監(jiān)控器）
文件頁數(shù)： 52/112頁
文件大?。?/td> 1359K
代理商： T7698
Data Sheet
January 1999
T7698 Quad T1/E1 Line Interface and Octal T1/E1 Monitor
52
Lucent Technologies Inc.
Frame Monitors
(continued)
Frame Formats
(continued)
D4 Superframe Format.
D4 superframe format consists of 12 DS1 frames. Table 30 shows the framing bit struc-
ture of the D4 superframe.
Table 30. D4 Superframe Format
Notes:
Frame 1 is transmitted first.
The remote alarm condition forces bit 2 of each time slot to a 0 state when enabled.
The remote alarm-Japanese condition forces framing bit 12 (bit number 2123) to a 1 state when enabled.
The T7698 frame monitor section uses both the F
T
and F
S
framing bits (excluding the twelfth F
S
bit) during its frame
alignment procedure.
Digital Data Service (DDS) Frame Format.
The superframe format for DDS is the same as that given for D4. DDS
uses channel 24 to transmit the remote frame alarm and data link bits. The format for channel 24 is shown in
Table 31.
Table 31. DDS Channel 24 Format
Framing Bits
Frame
Number
Bit
Number
Terminal
Frame
F
T
1
—
0
—
1
—
0
—
1
—
0
—
Signal
Frame
F
S
—
0
—
0
—
1
—
1
—
1
—
0
1
2
3
4
5
6
7
8
9
10
11
12
0
193
386
579
772
965
1158
1351
1544
1737
1930
2123
Channel 24 =
10111YD0
Y = remote frame alarm: 1 = no alarm state; 0 = alarm state
D = data link bits (8 kbits/s)
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