參數(shù)資料
型號： XRT86VL3x
廠商： Exar Corporation
元件分類： 通信及網絡
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)： 104/153頁
文件大?。?/td> 1316K
代理商： XRT86VL3X
XRT86VL3X
97
T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION
REV. 1.2.2
When the E1 system runs normally, that is, when there is no Loss of Signal (LOS) or Loss of Frame (LOF)
detected in the line, no alarm will be generated. Sometimes, intermittent outburst of electrical noises on the line
might result in Bipolar Violation or bit errors in the incoming signals, but these errors in general will not trigger
the equipment to generate alarms. They will, depending on the system requirements, trigger the framer to
generate interrupts that would cause the local microprocessor to create performance reports of the line.
Now, consider a case in which the E1 line from the CO to the Repeater is broken or interrupted, resulting in
completely loss of incoming data or severely impaired signal quality. Upon detection of Loss of Signal (LOS) or
Loss of Frame (LOF) condition, the Repeater will generate an internal Red Alarm, also known as the Service
Alarm Indication. This alarm will normally trigger a microprocessor interrupt informing the user that an incoming
signal failure is happening.
When the Repeater is in the Red Alarm state, it will transmit the Yellow Alarm to the CO indicating the loss of
an incoming signal or loss of frame synchronization. This Yellow Alarm informs the CO that there is a problem
further down the line and its transmission is not being received at the Repeater.
Figure 95
below illustrates the
scenario in which the E1 connection from the CO to the Repeater is broken.
F
IGURE
94. S
IMPLE
D
IAGRAM
OF
E1
SYSTEM
MODEL
E1 Receive
Framer Block
E1 Transmit
Framer Block
E1 Receive
Framer Block
E1 Transmit
Framer Block
E1
Transmit
Section
E1
Transmit
Section
E1
Receive
Section
E1
Receive
Section
CO
Repeater
CPE
Simple E1 System Model
相關PDF資料
PDF描述
XRT86VL3X_07 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
XRT86VL3X Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
XRT91L30_0611 STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
XRT91L306 STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
XRT91L30IQ STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
相關代理商/技術參數(shù)
參數(shù)描述
XRT86VL3X_07 制造商:EXAR 制造商全稱:EXAR 功能描述:T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION
XRT86VL3X_0710 制造商:EXAR 制造商全稱:EXAR 功能描述:T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION
XRT86VX38 制造商:EXAR 制造商全稱:EXAR 功能描述:OCTAL T1/E1/J1 FRAMER/LIU COMBO - HARDWARE DESCRIPTION
XRT86VX38_09 制造商:EXAR 制造商全稱:EXAR 功能描述:8-CHANNEL T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION
XRT86VX38_0906 制造商:EXAR 制造商全稱:EXAR 功能描述:OCTAL T1/E1/J1 FRAMER/LIU COMBO - HARDWARE DESCRIPTION
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