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): 61/110頁
文件大小: 752K
代理商: T7230A
Preliminary Data Sheet
June 1997
T7230A Primary Access Framer/Controller
57
Lucent Technologies Inc.
Alarms and Performance Monitoring
(continued)
Loopback and Transmission Modes
There are three primary loopback and transmission test modes supported by T7230A:
1.
System loopback (SLB)
2.
Line loopback (LLB)
3.
Payload loopback (PLLB)
In detail:
1.
The SLB mode loops the receive system data back to the system after:
A. The transmit framer processes the data.
B. The receive framer processes the data.
In this mode, AIS be transmitted to the line interface.
2.
The LLB mode loops the receive line data back to the transmit line without removing bipolar violations. The
receive data is processed by the receive framer and transmitted to the system interface.
3.
The PLLB mode loops the receive line data back to the transmit line after the bipolar violations are removed
and substitutes all receive framing data with the transmit framing data.
Figure 14 illustrates the various loopback modes.
5-3914(F).a
Figure 14. T7230A’s Loopback and Test Transmission Modes
FRAMER
LINE INTERFACE
ES
(1) SYSTEM LOOPBACK
AIS
RECEIVE SYSTEM DATA
DR IS IGNORED
SYSTEM INTERFACE
(2) LINE LOOPBACK
TRANSMIT FRAMER
(3) PAYLOAD LOOPBACK
OVERWRITES Fbit or
TS 0
LINE INTERFACE
LINE INTERFACE
SYSTEM INTERFACE
SYSTEM INTERFACE
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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
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