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Introduction
This practice provides installation and maintenance procedures for the ADTRAN Total Access
1500 Total Reach DDS‐DP (TR DDS‐DP). The figure on the left, illustrates the front panel of the
TR DDS‐DP (P/N 61180105L1).
Description
The TR DDS‐DP delivers data at rates up to 64 kbps using a single copper pair. Used in combi‐
nation with the Total Reach DDS‐R termination unit, the Total Reach DDS‐DP can accom‐
modate extended loop lengths, eliminating the need for DDS repeaters.
• The TR DDS‐DP span powers the remote DDS‐R located at the customer premises.
• The DDS‐R converts the 2‐wire signal to the traditional 4‐wire Alternate Mark Inversion
The TR DDS‐DP occupies a single channel position in the Total Access 1500 chassis. It
provides the interface between a DS0 time slot of the T‐carrier data stream and the 2‐wire
metallic loop extending to the customer premises. The TR DDS‐DP will interoperate over the
carrier system with another TR DDS‐DP, OCU DP, DS0 DP, 1/0 DCS, or switch and can be
located in an end office, hub office, intermediate office, or Digital Loop Carrier (see Figure 1).
The 2‐wire loop is connected using the Tip (pin 15) and the Ring (pin 35) on the Total Access
1500 backplane.
• All standard rates to 56 kbps with or without secondary channel
• 64 kbps clear channel
• 2‐wire deployment
• Repeaterless operation
• Bridged tap tolerant
• Span power for remote DDS‐R termination unit
• Utilization in all Total Access 1500 remote terminal applications
• Logic level test access; nonintrusive receive monitoring capability
• Loop Quality Monitor and A/B signaling options
• Embedded Digital System 6 capabilities for remote provisioning, configuration, and
• Provisioning via DB‐9 craft interface on Total Access 1500 System Controller Unit (SCU).
• Bidirectional loopback during local DS0 latching loopback
61180105L1-5C
(AMI) signal for presentation to the customer.
Total Access 1500
TR
DDS-
DP
Figure 1. Total Reach DDS-DP Circuit Diagram
Features
performance monitoring
Introduction
3
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