T1 Wire-Wrap Connection (P3); Power Connections (P6 And P7); Table 18. T1 Wire-Wrap Connector Pinout - ADTRAN Total Access 850 System Manual

Total Access 850 System Manual

T1 Wire-Wrap Connection (P3)

Network T1 connections can have up to 140 VDC. Use caution when making T1
connections.
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.
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.
Pin
1
2
3
4
5

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.
During installation, power should be the last connection made after all other wire-wrap
connections are completed.
64203376L1-1B

Table 18. T1 Wire-Wrap Connector Pinout

P3 Wire-Wrap Connections
Name
R1 DS1 Ring input from network
T1 DS1 Tip input from network
R DS1 Ring output from network
T DS1 Tip output from network
Gnd Ground
© 2004 ADTRAN, Inc.
Section 2 Engineering Guidelines
Description
39