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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)： | 48/110頁 |
| 文件大?。?/td> | 752K |
| 代理商： | T7230A |
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Preliminary Data Sheet
T7230A Primary Access Framer/Controller
June 1997
44
Lucent Technologies Inc.
Frame Formats
(continued)
CEPT Loss of Time Slot 16 Multiframe Alignment (LTS16MFA)
Loss of basic frame alignment forces the receive framer into a loss of time slot 16 signaling multiframe alignment
state. As defined in ITU Rec. G.732 Section 5.2, time slot 16 signaling multiframe is assumed lost when two con-
secutive time slot 16 multiframe 4-bit all-zero patterns are received with an error. In addition, the time slot 16 multi-
frame is assumed lost when, for a period of two multiframes, all bits in time slot 16 are in state 0. This state is
reported in the status registers. Once basic frame alignment is achieved, the T7230A will initiate a search for the
time slot 16 multiframe alignment. During a loss of time slot 16 multiframe alignment state:
1.
The updating of the signaling data is halted.
2.
The received control bits forced to the binary 1 state.
3.
The received remote multiframe alarm indication status bit is forced to the binary 0 state.
4.
Optionally, the transmit framer can transmit the time slot 16 signaling remote multiframe alarm.
5.
Optionally, the receive framer can transmit the alarm indication signal (AIS) in the system transmit time slot 16
data.
CEPT Loss of Time Slot 16 Multiframe Alignment Recovery Algorithm
The time slot 16 multiframe alignment recovery algorithm is as described in ITU Rec. G.732 Section 5.2. The rec-
ommendation states that if a condition of assumed frame alignment has been achieved, time slot 16 multiframe
alignment is deemed to have occurred when the 4-bit time slot 16 multiframe pattern of 0000 is found in time slot
16 for the first time and the preceding time slot 16 contained at least one bit in the binary 1 state.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T-7230A--ML | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| T7230-ML3 | 制造商:AGERE 功能描述: |
| T7-231A1 | 功能描述:撥動開關(guān) ON NONE OFF 2 Pole Standard Bat Handle RoHS:否 制造商:OTTO 觸點形式: 開關(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: 觸點電鍍: 照明: |
| T7-231A2 | 制造商:OTTO Engineering Inc 功能描述:2POLE, SOLDER, STD, |
| T7-231A2D | 功能描述:撥動開關(guān) ON NONE OFF 2 Pole Standard LeverLock RoHS:否 制造商:OTTO 觸點形式: 開關(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: 觸點電鍍: 照明: |
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