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參數(shù)資料
| 型號(hào)： | T7234 |
| 英文描述： | Compliance with the New ETSI PSD Requirement |
| 中文描述： | 符合新的ETSI PSD的要求 |
| 文件頁(yè)數(shù)： | 19/116頁(yè) |
| 文件大?。?/td> | 1056K |
| 代理商： | T7234 |
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Data Sheet
January 1998
T7256 Single-Chip NT1 (SCNT1) Transceiver
Lucent Technologies Inc.
15
S/T-Interface Frame Structure
(continued)
In the TE-to-NT direction, in at least four of five frames, this second violation occurs within 13 bits of the F bit. If this
coding algorithm is not maintained, the receiver loses synchronization, but the T7256 continues transmitting.
F = Framing bit
L = dc balancing bit
D = D-channel bit
E = Echo D-channel bit
FA = Auxiliary framing bit or Q-channel bit
N = Bit set to binary value N = FA
A = Activation bit
S = S-channel bit
M = Multiframe synchronization bit
B1 = Bit within B channel 1
B2 = Bit within B channel 2
5-2480 (C)
Figure 7. Details of NT and TE Frames
Signals from NT to TE
Signals from TE to NT
No signal.
A continuous signal with the following pattern:
positive ZERO, negative ZERO, six ONEs.
INFO 0
INFO 2
No signal.
Frame with all bits of B, D, and D echo (E) channels set to
binary ZERO; bit A set to binary ZERO; N and L bits set ac-
cording to the normal coding rules.
INFO 0
INFO 1
INFO 4
Frames with operational data on B, D, and E channels; bit
A set to binary ONE.
INFO 3
Synchronized frames with operational data on B
and D channels.
48 1
+0
4
48 1
2
3
9 10 11 12 13 14 15 16 17
23 24 25 26 27 28
34 35 36 37 38 39
45 46 47 48 1
B1
L
F
L B1
B1 B1 E
D
A FA N B2 B2
B2 E
D
M B1 B1
B1 E
D
S B2 B2
B2 E
D
L
F
L
MULTIFRAME SYNC
BIT (OPTIONAL, ONCE
IN 20 FRAMES)
(NT TO TE)
2
10 11 12 13 14 15
23 24 25 26
34 35 36 37
45 46 47
B1
D
F
B1 L
D
L FA L
B2 L
D
L
B1 L
D
L
B2
B2 L
D
L
1
–0
L
3
4
16 17
B2 B2
27 28
B1 B1
38 39
B2
48
FA/N BIT PAIR
INVERT TO FLAG
Q-BIT TRANSMISSION
(TE TO NT)
Q-BIT OPTION
(EVERY 5TH FRAME)
2-bit OFFSET
48 bits IN 250
μ
s
TIME
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T7234A | Compliance with the New ETSI PSD Requirement |
| T7237A | Compliance with the New ETSI PSD Requirement |
| T7256A | Compliance with the New ETSI PSD Requirement |
| T7288 | CEPT/E1 Line Interface(CEPT/E1 線接口) |
| T7290A | DS1/T1/CEPT/E1 Line Interface(DS1/T1/CEPT/E1 線接口) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T7234A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Compliance with the New ETSI PSD Requirement |
| T7237 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Compliance with the New ETSI PSD Requirement |
| T7237A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Compliance with the New ETSI PSD Requirement |
| T7240 | 制造商:TE Connectivity 功能描述: |
| T7-241A5 | 功能描述:撥動(dòng)開(kāi)關(guān) ON NONE OFF 2 Pole Standard Bat Handle RoHS:否 制造商:OTTO 觸點(diǎn)形式: 開(kāi)關(guān)功能: 電流額定值: 電壓額定值 AC: 電壓額定值 DC: 功率額定值: 端接類型: 安裝風(fēng)格: 端子密封: 觸點(diǎn)電鍍: 照明: |
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