Chapter 3. Operation
61200.129L1-1
TSU 120 User Manual
75
0.2 DSX-1 Port Configuration (Port Config) Menu Items
The menu items are:
Format
Format sets the frame format for the base DSX-1
interface.
Choices: D4, ESF
Code
Code sets the line code for the base DSX-1 interface.
Choices: AMI B8ZS
Yellow Alarm
YEL Alarm enables and disables the transmitting of
yellow alarms.
Choices: ENA, DISA
Line Length (ft)
Line Length provides selection of the proper output
level for the base DSX-1 based on the length of the
interface cable.
In-band Loopback (INBAND LPBACK)
In-band Loopback sets the base DSX-1 to accept or
reject in-band loopup or loopdown codes (per ANSI
T1.403 specification) which may be sent to the card
over the DSX-1 interface. This loopback is a line
loopback.
Robbed Bit Signaling
This menu option is used to enable/disable robbed-bit
signaling. Whenever the base DSX-1 interface is
connected to terminal equipment (i.e., PBX/SW56) for
voice or dialed data services, this option should be
enabled. The only exception is when the terminal
equipment is using a form of common channel signal-
ing (i.e., PRI).
Summary of Contents for TSU 120
Page 1: ...TSU 120 PART NUMBER 1200129L1 USER MANUAL 61200 129L1 1A July 1997...
Page 52: ...Chapter 2 Installation 38 TSU 120 User Manual 61200 129L1 1...
Page 132: ...Appendix C System Configuration Charts 118 TSU 120 User Manual 61200 129L1 1...
Page 138: ...Appendix D TSU 120 System Messages 124 TSU 120 User Manual 61200 129L1 1...