Specifications

8-8
Cisco MGX 8260 Command Line Interface Guide
Release 1.2, Part Number 78-10987-01 Rev. B0, January, 2002
Chapter 8 Troubleshooting
Clearing Alarms
Use the following guidelines to solve general DS1/E1 configuration problems.
LOSMF (E1 only)
• Check for framing format misconfiguration
• Check for TS16 alteration
• Check for bit errors in TS16
• Check for line coding misconfiguration
Yellow (RAI)
• Check the transmit on the near end
• Check the physical connection
• Perform a BERT to verify the line condition
RMAI (E1 only)
• Check the transmit of TS16 at the near end
• Check the physical connection
• Perform a BERT to verify the line condition
Red Alarm
(LOS or LOF)
See LOS of LOF above.
Yellow Alarm
(RAI or RMAI)
See RAI or RMAI above.
Displayed Information Possible Cause and Corrective Action
Problem Possible Cause
Failure to configure CAS
• D-channel is enabled
• Framing format conflict
Failure to change framing
type
• D-channel is enabled
• Failure to set hardware device
Failure to delete a line
• Voice port exists
• Hardware failure
Failure to change system
line interface mode
• BSC configured, even if not physically installed, when changing
from the T1 to E1 mode
• T1 line exists when changing from the T1 to E1 mode
• E1 line exists when changing from the E1 to T1 mode