
Appendix E. Troubleshooting
61200305L1-1 ATLAS 550 User Manual E-3
Cabling problem.
•T1
–Checktheports’alarmstatus.
– 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
•FromP
ACKET
M
ANAGER
/P
ACKET
E
NDPNTS
/S
TATUS
,verifythatthepacket
endpoint indicates that a physical port is mapped.
Signaling mismatch
•FromP
ACKET
M
ANAGER
,verifythattheSignalingtypematchesthatpro-
vided by the carrier and the external DTE.
Timers not configured
• Verify that frame relay counters and timers are configured as specified
bytheframerelayprovider. (Countersandtimersdonotnormallyneed
to be adjusted.)
DLCI is not active
•VerifyintheP
ACKET
M
ANAGER
/P
ACKET
E
NDPNTS
/P
ERFORMANCE
menu
that the DLCIshows active. If the DLCI is listed inactive and the packet
endpointisconfiguredas User sideofUNI,the framerelaynetworkhas
not activated this DLCI.
NodataonDLCI
•VerifyintheP
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.
•VerifyintheP
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.
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