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LTPE-UG-1017-01 Issue 1
Table 9. Fields and Options Displayed in UTU-731 Config Interface Menus
Field and Options
Primary Timing Source
EXT
G.703
CRC-4 Mode
DIS
ENA
PASSTHRU
Idle Code
Data Rate/# of TSs
Beginning TS
UTU-731 List 1 and UTU-732 List 1
Description
Selects the clock source for the HDSL transmit direction.
External 2.048 MHz clock (UTU-701 only)
Input E1 clock
G.703 Port
Cyclic Redundancy Check (CRC) to detect errors in transmitted
data. Available only when less than 32 time slots are selected
(places unit in structured application mode).
CRC-4 mode is disabled. CRC-4 mode is not available (N/A)
when 32 time slots are selected (places unit in unstructured
application mode).
The input G.703 signal is monitored for CRC-4 multiframe
errors. A new CRC-4 code is output for use at the remote unit.
Detected errors are displayed in the Monitor LTU and NTU
Interface screens.
All time slot 0 bits are passed unchanged to the remote unit.
Useful when detection of CRC-4 errors is performed by
customer equipment.
User inputs the idle pattern (from 00 to FF) transmitted in
unused time slots from LTU or NTU G.703 port. Factory default
setting is FF.
Read-only display of indicated HDSL data rate and
corresponding number of time slots (TSs) as set with HDSL
Payload Rate option in the Config System Settings menu.
Default setting is 128kbps/2.
Read-only display of beginning time slot. This setting is 0 (zero)
in the structured mode and one (1) in the unstructured mode.
February 15, 2001
System Configuration
31
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