363-206-305
Technical Specifications
10-10
Issue 3 June 2000
■
Format Specification
The T1EXT BBF6 low-speed interface can be provisioned for the following
formats: clear channel (default), SF as specified in ANSI T1.403-1989, or
ESF as specified in ANSI T1.403-1989. In the case of SF or ESF format
selections, T1EXT performance information is collected by monitoring the
associated T1EXT framing format.
■
Alarm Thresholding
The following parameters are monitored at the T1EXT interface:
— Loss of signal
— Line coding violations.
The alarm level for each of the monitored parameters can be provisioned to
CR, MJ, MN, or status. B8ZS and AMI coding violation failure thresholds
are user settable to 10
-7
or 10
-8
BER.
■
Performance Monitoring (PM) (See Table 10-3 and Table 10-23.)
— Near-end T1EXT path parameters (ES, SES, and UAS) for SF or
ESF framed signals incoming to the DSX-1
— Far-end T1EXT path parameters (ES, SES, and UAS) for ESF
framed signals using performance report messages (PRM)
incoming from the DSX-1
— Coding violations (CV) for near-end and far-end
— T1EXT line PM monitoring and ES reporting
Refer to 363-206-300,
DDM-2000 FiberReach Multiplexer Applications, Planning,
and Ordering Guide
, Chapter 6, "System Planning and Engineering," for specific
engineering rules regarding T1EXT lines.
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