Black Box COMPACT T1 MT850A - Manual (Page 536)

B-8 Compact T1 - Release 6.1
Diagnostices & Troubleshooting
Loopbacks Overview
DS1 Loopbacks
Note: T1 LEDs flash green during any DS1 loopback.
DS1 Line Loop
Loops at DS1 (at framer),
signal not reframed. Have
DS1 vendor check for
framing/errors.
Enable Line Loopback
> set a:1 line loopup
OK
View Status of Loopback
DS1 Status
> status a:1
SLOT A:
Status for DS1 1:
Receive: Traffic
Transmit: Traffic
Loopback: LINE
Disable Line Loopback
> set a:1 line loopdown
OK
View Status of Loopback
DS1 Status
> status a:1
SLOT A:
Status for DS1 1:
Receive: Traffic
Transmit: Traffic
Loopback: OFF
T1
Adit 600
Local
DCE
V.35
Loops DS1 as shown
Signal Not Reframed
Local
DTE
FXS
Telephone
DS1
Network
Compact T1