DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Commands
8-53change fiber-link
8
The line equalization setting defaults to the median value of 3. This setting
remains in effect until changed by administration. Incorrect equalizer settings
may cause a higher error rate on the DS1 facility.
The following display shows a typical result when change fiber-link 1 is entered
on a system with simplex PNC and Center Stage Switch.
DS1C-1 Line
Compensation
This specifies the type of line compensation or line equalization for
each facility of the DS1 CONV connected to ENDPOINT-1. Valid
entries are
1
to
5
. Meanings of these entries are shown in Table 8-6
.
Table 8-6. DS1 Line Equalization Settings
Equalizer Setting
Distance to DSX-1 Interface (feet)
22 AWG ABAM and 24 AWG PDS 26 AWG PDS
1 1 to 133 0 to 90
2 133 to 266 90 to 180
3 266 to 399 180 to 270
4 399 to 533 270 to 360
5 533 to 655 360 to 450
DS1
CONV-2 Line
Compensation:
Same as the above for ENDPOINT-2 of the DS1 CONV Complex.
Zero Code
Suppression:
Specifies the line coding format for each facility. Valid entries are:
zcs
and
b8zs
. There are 2 line coding options supported by the
DS1 Interfaces to meet ones-density requirements in the data
stream. Zero Code Suppression (ZCS) line coding is the default
and is in place following an initialization until changed by
administration. Note that either line coding option may be used on
the DS1 Interface that carries the packet time slots.
Framing Mode:
Specifies the data framing format (
esf
or
d4
) used on the facility. It
is initialized to ESF. In this mode, an automatic selection process is
executed until either the DS1 Interface is brought into frame, or an
Options CCMS message is received by the framing options
master. Once options are set by administration, they remain fixed
on the framing option master until the board is again initialized,
reset, or sent new options. The framing option on the framing
option slave Converter Board can change to track the framing
option master’s option.
