Table of Contents
Advertisement
61200.129L1-1
REMOTE LOOPBCK
This activates the same loopbacks as Local Loopback
but at the far end. It uses either the in-band loop-up
code as specified by ANSI T1.403 for line loopback
(ATT In-Band LLB), or the FDL as specified in ANSI
T1.403 for payload and line loopback codes. The
following options are available:
ATT In-Band LLB Activates the line loopback
ANSI FDL LLB
ANSI FDL LLB
No Loopback
Remote Loopback cannot be used with Fractional T1 since
the full T1 stream including the FDL is not transported to
the far end.
Scroll to select a setting and record it by pressing
Enter. The unit returns the cursor to 2)LOCAL
LOOPBCK.
Scroll to select 1)Local Loopback or 3)Pattern.
After a Remote Loopback option is selected, the TSU
120 verifies that the far end is actually in a loopback
by checking for the receipt of a code looped back from
the far end. Once the Remote Loopback type is
selected, the LCD displays the loopback progress by
displaying Looping until loopback is verified.
TSU 120 User Manual
Chapter 3. Operation
using inband code
Initiates the transmission of
an FDL payload loop-up code
toward the far end
Initiates the transmission of
an FDL line loop-up code
toward the far end
Deactivates the loopback
8 5
Advertisement
Table of Contents
