19
MULTIPORT CSU/DSU
3.1.3 DIP S
WITCH
S
ET
S3
The configuration switches on S3 set the BER Test pattern, response to remote
loop, front-panel switch activation, DTE loop request, and control-port speed. The
default settings are shown in
Table 3-14
. All settings appear in
Table C-3
. Detailed
descriptions for each switch in the set appear on
pages 18–20
.
Table 3-14. S3 Summary Table.
Position Function
Factory
Default
S3-1
Test Pattern
Off
511
S3-2
RDL Response
Off
Enabled
S3-3
Front Panel Switches
Off
Enabled
S3-4
DTE Loop Request
On
Disabled
S3-5
Reserved for future use
S3-6
Reserved for future use
S3-7
Control Port Speed
Off
S3-8
Control Port Speed
Off
Switch S3-1: Test Pattern
Use Switch S3-1 to set the V.52-compliant pattern used to test the CSU/DSU. The
two test options are the 511 and the 2047 BER patterns (for descriptions of these
patterns, see
Section 5.4
).
Table 3-15. Settings for Switch S3-1.
S3-1
Setting
Off
511 Pattern
On
2047 Pattern
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