T1 Connections (Rj-48C) - ADTRAN TRACER 4106 Plan A System Manual

Section 3 Engineering Guidelines
screen.
Hangup-on-DTR-drop may need to be explicitly enabled on some modems.
Table 5 contains the wiring diagram needed for connecting the TRACER 4106/4206 RS-232 interface to a
modem using the null modem adapter.
The null modem interface must route Carrier Detect (CD) on pin 8 directly from the
modem. When using the RS-232 interface for modem control, the modem must source CD
only when actually connected to a carrier.
Table 5. TRACER 4106/4206 (DCE) to Modem (DCE - DB-25)
PIN
2
3
4
5
6
7
8

T1 Connections (RJ-48C)

The physical T1 interfaces are provided by eight RJ-48C jacks that comply with the applicable ANSI and
®
AT&T standards.
PIN NAME
1 R
2 T
3, 6-8 UNUSED
4 R1
5 T1
30
NAME
TX
RX
RTS
CTS
DSR
GND
CD
Table 6. T1 Interface Connector Pinout
Transmit data (ring) towards the network
Transmit data (tip) towards the network
—
Receive data (ring) toward the network
Receive data (tip) from the network
© 2004 ADTRAN, Inc.
TRACER 4106/4206 System Manual
PIN NAME
3 RX
2 TX
5 CTS
4 RTS
20 DTR
7 GND
8 CD
DESCRIPTION
612804206L2-1A