ADTRAN TSU 120e - Manual (Page 34)

Chapter 2. Installation
2-6 TSU 120 User Manual 61202129L1-1
DSX-1 (PBX) Interface
The DSX-1 Interface provides a short haul T1 for a PBX or other
equipment. This port complies with ANSI T1.102.
DSX-1 Test Interface
The IN and OUT test jacks for the DSX-1 interface provide intru-
sive test capabilities for the T1 connecting the TSU 120 to the
PBX or other customer premise equipment. By connecting to
these jacks with test equipment, the DSX-1 connection will be
broken, and the test equipment will be terminating the DSX-1
connection from the PBX.
The T-MON test jack provides a DSX monitor access jack for
non-intrusive monitoring of the T1 connecting the TSU 120 to
the PBX or other customer premise equipment. When con-
nected to this jack, the test equipment should be configured for
a
DSX MON termination.
Chain Port Input
The chain port input provides an EIA-232 input from a PC or a
modem for control of the TSU 120. You can also use it as a chain
input from another TSU 120 or the TSU 100. For more informa-
tion see the Wiring section in Appendix C, on page C-1.
Chain Port Output
The chain port output provides an EIA-232 output to chain con-
trol to other TSUs. For more information see the Wiring section
in Appendix C, on page C-1.
10BaseT Interface (TSU 120e only)
The 10BaseT interface provides the LAN interface for manag-
ing the TSU 120 with SNMP or T-WATCH Pro. For more infor-
mation see the Wiring section in Appendix C, on page C-1.