Local loopback tests, Sending a v.54/ansi ft1 activation/deactivation – Paradyne 3163 User Manual
Page 63
Monitoring and Testing
4-11
3163-A2-GB20-10
March 1999
Sending a V.54/ANSI FT1
Activation/Deactivation
"
Procedure
To send a V.54 or ANSI FT1 Activation or
Deactivation loopback sequence to the far-end DSU/CSU:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Rlpbk.
F1
Test:
Rlpbk Lpbk
Ptrns
F2
F3
3. From the Rem Loopback screen, press the
function key that corresponds to the specific
loopback test you want to perform. Use the scroll
keys, if necessary.
F1
Rem Loopback:
LLBUP LLBDN 54UP
F2
F3
The 54UP, 54DN, FT1UP, and FT1DN commands
send the requested sequence out the network
interface on the DS0 channels allocated to Port 1.
The sequence is sent to the far-end DSU/CSU.
During this time, Sending appears on Line 2 of
the LCD, followed by Command Complete when
the sequence is complete.
During the Sending message, you can press the
and
keys without affecting transmission
of the loopback sequence.
Local Loopback Tests
The Local Loopback tests enable you to conduct circuit
testing and fault isolation for the digital line. The
supported local loopback tests are:
The Line Loopback command can be activated and
deactivated in response to commands received over the
network interface. The Network Interface configuration
option NET LLB controls whether the DSU/CSU
responds to the commands transmitted on the network
interface to initiate LLBs (see Appendix C,
The data port configuration option NET DCLB
Local loopback tests can be aborted (Abort Command)
at any time.
No more than two local loopbacks can be active at any
one time. An additional restriction prohibits certain
loopbacks from running at the same time. Valid loopback
combinations listed in Table 4-5 are identified by YES.
Table 4-5
Valid Loopback Combinations
LLB
PLB
RLB
DCLB
DTLB
LLB
N/A
NO
YES
NO
YES
PLB
NO
N/A
NO
NO
YES
RLB
YES
NO
N/A
NO
YES
DCLB
NO
NO
NO
NO
NO
DTLB
YES
YES
YES
NO
NO