Zhone IMACS Network Device Especificaciones descargar pdf (Pagina 113)

Zhone Technologies, Inc. IMACS Product Book, Version 4

March 2001 Page 109

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Figure 44b - Built-In Diagnostics Example

IMACS Performance Monitoring

The IMACS provides non-intrusive performance monitoring of T1 lines and DDS circuits that terminate on OCU-

DP cards. This capability is built into the system software and does not require any special options or expensive

external equipment.

T1 Line Performance Monitoring

Performance monitoring, statistics gathering and performance reporting of T1 facilities is supported in the IMACS.

In ESF format, CRC errors, Out-Of-Frame errors, and Controlled Slips are combined to provide line quality and

performance statistics in accordance with industry standards. In D4 format, Bipolar Violations (BPVs) are used

instead of CRC errors. The performance statistics are gathered and displayed in fifteen-minute intervals for the

preceding twenty-four hours. They include Errored Seconds, Unavailable Seconds, Severely Errored Seconds,

Bursty Errored Seconds, Loss Of Frame Count, and Slipped Seconds.

In ESF mode, these statistics are available to the system operator as well as to the carrier or service provider over the

embedded 4 Kbps Facilities Data Link (FDL). Each ESF T1 facility can be independently programmed to support

framing according to the AT&T 54016 standard or the ANSI T1.403 standard or both simultaneously. Additionally,

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