ADTRAN warranty L2-5 Issue 3, June CLEI Code # D4DA740, Practices, ADTRAN D4-OCU DP

C A U T I O N !

Section 61107005L2-5

Issue 3, June 1996

CLEI Code # D4DA740 _ _ _

PRACTICES

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

D4-OCU DP (ETR)

ALL-RATE OFFICE CHANNEL UNIT DATAPORT

WITH EXTENDED TRANSMIT RANGE

INSTALLATION/MAINTENANCE

	CONTENTS
1.	GENERAL	1
2.	INSTALLATION	2
3.	CONNECTIONS	3
4.	TESTING	3
5.	AUTO LOOP DISCONNECT	4
6.	MAINTENANCE	4
7.	WARRANTY AND CUSTOMER SERVICE	4
	FIGURES
Figure 1. ADTRAN D4-OCU DP		1
Figure 2. Rate Option Switch		2
Figure 3. SW1		3
Figure 4. Connector Pin Assignments		4
	TABLES
Table A. SW1 Option Settings		3

1.GENERAL

This practice has been reissued to correct enhanced Switch 56 references.

This practice is an installation and maintenance guide for the ADTRAN Office Channel Unit Dataport (D4-OCU DP) with Extended Transmit Range1 (ETR). Figure 1 is an illustration of the unit. A detailed product description is found in ADTRAN D4-OCU DP Description Practice, Section 61107005L2-2.

The Office Channel Unit Dataport (OCU DP) allows access to the Dataphone® Digital Service (DDS) or Basic Digital Service using existing 4-wire metallic facilities and D4 channel banks equipped for dataport operation. In addition to this interchangeability, the ADTRAN D4-OCU DP contains the following enhancements:

•Extended loop range2 (45 dB receiver range when operated at all rates)

•Intermediate rate of 19.2 kbps; special format3

________________________________________

1Covered under I.N.C. patent number 4,887,278 Dataphone is a registered trademark of AT&T

2Covered under ADTRAN patent number 4,759,035

3Covered under I.N.C. Patent No. 4,862,480

O N
1
2
3
4	OCU		DP
5 6 7
8
9 10	1107005L2
	D4-OCUDP
SW1	RX (OUT)
	TX (IN)
		LOOP			BACK
		IDLE			CKT
		NO			SX
		AUTO			DIS
		38.4		56 64		56
						38.4
		19.2				19.2
	SC	9.6				9.6
		4.8				4.8
		2.4		SW56		2.4

Figure 1. ADTRAN D4-OCU DP

•Switched 56 capability

•Latching and normal loopbacks

•Latching loopback capability in SW56 mode

•Loss of sealing current disconnect

•Poor loop signal quality disconnect

•Hardware signaling selection

•45 dB range at all rates

•Faceplate Bantam jacks

•Four diagnostic faceplate indicators

•Extended transmit range

Furnished with common equipment and individual channel units, the D4 channel bank is a digital terminal providing multiple-channel access to T carrier lines. The dataport is a D4-type channel unit which allows direct digital access to a T carrier time slot, avoiding the normal analog-to-digital conversion required in a voice channel unit.

61107.005L2-5C Section 61107005L2-5, Issue 3 1