Installation 2-71
DSU DIM Installation
Troubleshooting DSU DIM Installation
Introduction Some of the potential installation problems are listed below:
• Improper port connection of the EIM
• Improper telco interface connection
• DSU DIM not connected in DTE configuration
• Processor card jumpers not in HS1 mode
• DSU option software not operational
• DSU port clock source option not correct
• No signal from telco interface
CTP
Troubleshooting
The following information can be derived from the control terminal to aid in
troubleshooting.
Node Statistics Used to verify that the software is a version which contains
the DSU option modifications. It also shows if the DSU DIM
is recognized by the software.
Port Statistics Used to verify that data is being sen t without error. Error
counts may denote an error in clocking mode configuration.
It also shows if the DSU DIM is recognized by the software.
Monitor Input/output signals can be used to determine if the DSU
option is in a loopback mode requested by the remote end.
This would be an explanation for the inability to send data.
Continuous bipolar violations would also indicate the remote
system is out of service.
DSU Internal
Loopback
Failure of this loopback mode would indicate that the EIM
module is not connected.