ADTRAN D4 OCU DP (ETR) D4-OCU دليل المستخدم

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Section 61107005L2-5
Issue 3, June 1996
C A U T I O N !
CLEI Code # D4DA740 _ _ _
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
PRACTICES
D4-OCU DP (ETR)
ALL-RATE OFFICE CHANNEL UNIT DATAPORT
WITH EXTENDED TRANSMIT RANGE
INSTALLATION/MAINTENANCE
CONTENTS
1. GENERAL ...................................................................1
2. INSTALLATION...........................................................

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In the DDS system, an OCU DP located at an end office No rate selection interfaces the customer to the T carrier system. A 4-wire 64 56 loop is terminated at the customer premises by a data 56 service unit (DSU) or a channel service unit (CSU). It can 38.4 be used in the hub office, intermediate office, end office, 38.4 19.2 ® or SLC terminal to extend the DDS network to that office which has previously served voice channels exclusively. SC 9.6 19.2 The ADTRAN All-Rate Extended Range D4-OCU DP

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O 1 2 3 4 5 6 7 8 9 10 N O 1 2 3 4 5 6 7 8 9 10 N SW1 SW1 OFF ERROR CORRECTION OFF D4 BANK OFF SLC-96 MODE I, III TYPE SLC-96 MODE II OFF ZERO CODE SUPPRESSION OFF LATCHING LBK ENABLE OFF OFF ENHANCED SWITCHED 56 (OBSOLETE) OFF AB SIGNALING QUALITY MONITOR OFF ETR Figure 3. SW1 Table A. SW1 Option Settings Switch Function SW1-1 On .... Activates error correction Off .... Deactivates error correction SW1-2 On.... Selects D4 bank type. Off .... Unable

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This will cause the branch to be blocked at the next 28 1 FRM GND junction (MJU or QMJU). The D4-OCU DP detects poor 2 29 -12V received signal quality on the loop by monitoring for +5V 30 3 GND IN CLK +12V 31 4 illegal bipolar violations. TNEN 32 5 GND TWD 33 6 6. MAINTENANCE 34 7 TSP TDATA 35 8 TSQ The D4-OCU DP requires no routine maintenance to RSAB 36 9 RNPCM operate properly. In case of equipment malfunction, use 37 10 RFA the faceplate test connector and indicators to determine RCLK 38 1