ADTRAN Atlas 550 User Manual
Page 237
Appendix E. Troubleshooting
61200305L1-1
ATLAS 550 User Manual
E-3
Cabling problem.
•
T1
–
Check the ports’ alarm status.
–
If the T1 is experiencing LOS, ensure the cable is plugged in.
–
If the cable is plugged in, ensure the pinout is correct. Refer to the
ATLAS User Manual for a correct pinout.
•
Nx
–
Check DTE port signals and verify that DTR and RTS are active.
–
If signals are inactive, verify V.35 cable is connected to correct port.
–
If cable is connected, verify external DTE is powered on.
Packet endpoint not mapped
•
From
P
ACKET
M
ANAGER
/P
ACKET
E
NDPNTS
/S
TATUS
, verify that the packet
endpoint indicates that a physical port is mapped.
Signaling mismatch
•
From
P
ACKET
M
ANAGER
, verify that the Signaling type matches that pro-
vided by the carrier and the external DTE.
Timers not configured
•
Verify that frame relay counters and timers are configured as specified
by the frame relay provider. (Counters and timers do not normally need
to be adjusted.)
DLCI is not active
•
Verify in the
P
ACKET
M
ANAGER
/P
ACKET
E
NDPNTS
/P
ERFORMANCE
menu
that the DLCI shows active. If the DLCI is listed inactive and the packet
endpoint is configured as User side of UNI, the frame relay network has
not activated this DLCI.
No data on DLCI
•
Verify in the
P
ACKET
M
ANAGER
/P
ACKET
E
NDPNTS
/P
ERFORMANCE
menu
that the DLCI shows receive packets. If there are no packets received,
verify that external equipment is configured to transmit data on this
DLCI.
•
Verify in the
P
ACKET
M
ANAGER
/P
ACKET
C
NCTS
menu that this DLCI is
mapped.
Frame relay link is down.
Link is active, but data is not passing.