R
R
T
T
A
A
0
0
4
4
N
N
U
U
s
s
e
e
r
r
’
’
s
s
M
M
a
a
n
n
u
u
a
a
l
l
E
E
d
d
.
.
0
0
.
.
1
1
Page 76 of 78
OAM Loopback allows you to verify the connectivity between VP/VC endpoints, as well as segment
endpoints within the VP/VC. ATM uses two cell flows: F4 used in VPs and F5 used in VCs.
Figure 4-61
Flow type:
The ATM OAM flow type. The selection can be F5 Segment, F5 End-to-End, F4
Segment or F4 End-to-End.
VPI:
The VPI number you want to do the loopback diagnostics.
VCI:
The VCI number you want to do the loopback diagnostics.
4.6.6.4. ADSL Diagnostic
Choose “
Maintenance→Diagnostic→ADSL Diagnostic
”, you will see the next screen (shown in
Figure 4-62). ADSL diagnostics allows you to diagnostics the ADSL tone.
