ADTRAN TROCU DP, DSU/CSU warranty L2-5 Issue 2, June CLEI Code #D4D3MPY, General, Description

Section 61291006L2-5

Issue 2, June 1999

CLEI Code #D4D3MPY_ _ _

Model TROCU DP Preferred Option

Total Reach® All-Rate DDS Dataport

Installation and Maintenance

CONTENTS
1.	GENERAL		1
2.	OPTIONS		2
3.	INSTALLATION		3
4.	TESTING		3
5.	REMOTE PROVISIONING AND
	DIAGNOSTICS		4
6.	DEPLOYMENT GUIDELINES		5
7.	WARRANTY AND CUSTOMER SERVICE		6
FIGURES
Figure 1. TROCU DP Preferred Option			1
Figure 2. Total Reach DDS Circuit Diagram			1
Figure 3.		Option Switch	2
Figure 4.		Rate Selection	2
Figure 5. OCU Loopback at the TROCU DP			4
Figure 6. TROCU DP Bidirectional Loopback
		Pass-Thru Mode	4
Figure 7. TROCU DP Bidirectional Loopback
		Normal Mode	4
TABLES
Table 1.		Preprovisioning	3
Table 2. Cable Type Loss Data @ 13.3 kHz			3
Table 3.		LED Indicators	5
Table 4. TRDDS Insertion Loss Measurements			5

1. GENERAL

This practice provides installation and maintenance procedures for the ADTRAN D4 Total Reach Office Channel Unit Dataport (TROCU DP) Preferred Option. The unit is illustrated in Figure 1.

Document Revision History

Issue 2 of this document revises the Deployment Guidelines subsection.

Description

ADTRAN D4 TROCU DP Preferred Option is a functional replacement for the D4 OCU DP, delivering data at rates up to 64 kbps on a single copper pair. Used in combination with the Total Reach Digital Data Service Remote termination unit (TRDDS-R), the TROCU DP can accommodate extended loop lengths eliminating the need for DDS repeaters. The TROCU DP span powers the remote TRDDS-R located at the customer premise. The TRDDS-R converts the two-wire signal to the

SW1
	DP
TROCU
1291006L2
SD4	2-WIRE
	SC
	64
	56
	19.2
SYNC	9.6
LOSS	4.8
NEAR	2.4
	SW56
CRC
FAR
CRC
REM
QM	AP
DISC
NO
DSU
LBK
IDLE		L
Rx		O
(OUT)		G
		I
Tx		C
(IN)

Figure 1. TROCU DP Preferred Option

traditional four-wire Alternate Mark Inversion (AMI) signal for presentation to the customer.

The TROCU DP occupies a single channel position in the WECO® compatible D4 channel bank or the AT&T® SLC-96 Mode I and III terminal. It provides the interface between a DS0 timeslot of the T-carrier data stream, and the two-wire metallic loop extending to the customer premises.

The TROCU DP may interoperate over the carrier system with another TROCU DP, an OCU DP, a DS0 DP, a 1/0 DCS, or the central office switch. The unit can be located in an end office, hub office, intermediate office, or remote terminal digital carrier system (see Figure 2). The two-wire loop is connected using the tip (pin 24) and ring (pin 51) on the D4 backplane.

	D4 or SLC-96	Customer Premises
			4-Wire Customer
	TR	2-Wire Loop	Interface
T-Carrier
	OCU	TRDDS-R	DSU/CSU
	DP	T/R Pair

Figure 2. Total Reach DDS Circuit Diagram

61291006L2-5B	Trademarks: Any brand names and product names included in this document are	1
	Section 61291006L2, Issue 2
	trademarks, registered trademarks, or trade names of their respective holders.