Introduction
61180105L1-5C
3
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
(AMI)
signal
for
presentation
to
the
customer.
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
).
The
2
‐
wire
loop
is
connected
using
the
Tip
(pin
15)
and
the
Ring
(pin
35)
on
the
Total
Access
1500
backplane.
Figure 1. Total Reach DDS-DP Circuit Diagram
Features
• 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
performance
monitoring
• Provisioning
via
DB
‐
9
craft
interface
on
Total
Access
1500
System
Controller
Unit
(SCU).
• Bidirectional
loopback
during
local
DS0
latching
loopback
Total Access 1500
TR
DDS-
DP