JDS Uniphase CellAdvisor JD780A Series, Руководство пользователя

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JD780A Series Analyzers
Using E1 Analyzer
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Introduction
The European Conference of Postal and Telecommunications Administrations (CEPT) originally
standardized the E-carrier system, which revised and improved the earlier American T-carrier
technology, and this has now been adopted by the International Telecommunication Union
Telecommunication Standardization Sector (ITU-T).
E1 is transmitted physically as 32 timeslots, but one is used for framing and typically one allocated for
signaling call setup and tear down. Unlike Internet data services, E-carrier systems permanently
allocate capacity for a voice call for its entire duration. This ensures high call quality because the
transmission arrives with the same short delay (Latency) and capacity at all times.
This portable test instrument can be a useful tool to check the overall health of the transmission
system and assist in locating the source of problems or defects.
The E1 Analyzer function provides following measurements:
 Monitoring
 BERT Testing (PCM31 only)
Display overview
Figure 266 provides descriptions for each segment of the measurement screen.
Figure 266 E1 analyzer screen