Total Access 850 System Manual
Section 2 Engineering Guidelines
64203376L1-1B
© 2004 ADTRAN, Inc.
39
T1 Wire-Wrap Connection (P3)
There are two termination points for connecting the network T1 to the chassis: the primary RJ-48
connector (JP2) and the alternate wire-wrap pins on terminal strip P3 (see Figure 6 on page 33). Only one
connector type is used (not both). The T1 primary connection is via the RJ-48 connector labeled T1 (JP2).
This arrangement provides a convenient T1 connection for those installations where a T1 Smart Jack is
used. Table 18 on page 39 shows the pinout for the T1 wire-wrap connector.
Table 18. T1 Wire-Wrap Connector Pinout
Power Connections (P6 and P7)
There are two power connections on the backplane: a modular DC plug (P6), and a three-lug terminal strip
(P7) (refer to Figure 8 on page 40). The primary connection is the modular plug, which receives -48 VDC
from an approved ADTRAN power supply/battery charging unit (for example, P/N 1175043L2). The
alternate connection is screw terminal P7, which can be used if -48 VDC is available as in central office
applications. The screw terminal connection is shown in Figure 8 on page 40.
Network T1 connections can have up to 140 VDC. Use caution when making T1
connections.
The Total Access 850 provides dual T1 connection points. In all cases, only one of
the connection points is used. When wire-wrapping of the T1 is utilized (using P3), a
blank plug must be placed in the primary T1 connection (JP2). There is a potential of
Class A3 T1 Span Power Voltage coming from the network.
P3 Wire-Wrap Connections
Pin
Name
Description
1
R1
DS1 Ring input from network
2
T1
DS1 Tip input from network
3
R
DS1 Ring output from network
4
T
DS1 Tip output from network
5
Gnd
Ground
During installation, power should be the last connection made after all other wire-wrap
connections are completed.
Summary of Contents for Total Access 850
Page 14: ...Table of Contents Total Access 850 System Manual 14 2004 ADTRAN Inc 64203376L1 1B ...
Page 16: ...Section 1 System Description Total Access 850 System Manual 16 2004 ADTRAN Inc 64203376L1 1B ...
Page 22: ...Section 1 System Description Total Access 850 System Manual 22 2004 ADTRAN Inc 64203376L1 1B ...
Page 224: ...Section 5 DLP 4 Total Access 850 System Manual 224 2004 ADTRAN Inc 64203376L1 1B ...
Page 232: ...Section 5 DLP 6 Total Access 850 System Manual 232 2004 ADTRAN Inc 64203376L1 1B ...
Page 236: ...Section 5 DLP 7 Total Access 850 System Manual 236 2004 ADTRAN Inc 64203376L1 1B ...
Page 244: ...Section 5 DLP 10 Total Access 850 System Manual 244 2004 ADTRAN Inc 64203376L1 1B ...
Page 252: ...Section 5 DLP 13 Total Access 850 System Manual 252 2004 ADTRAN Inc 64203376L1 1B ...
Page 256: ...Section 5 DLP 14 Total Access 850 System Manual 256 2004 ADTRAN Inc 64203376L1 1B ...
Page 264: ...Section 5 DLP 16 Total Access 850 System Manual 264 2004 ADTRAN Inc 64203376L1 1B ...
Page 278: ...Section 6 ADTRAN Utilities Total Access 850 System Manual 278 2004 ADTRAN Inc 64203376L1 1B ...