Multitech MMH900 User Manual page 105

Problem Channel devices incorrectly cabled
Solution 1. Refer to cabling diagrams of both mux and
channel devices.
Some channel devices not communicating with MultiMux and
composite link up
Problem Incorrect channel parameter settings fo rthose
channel devices
Solution 1. Verify channel parameter settings for those
channel devices, refer to Lx command in Chapter 4
to display channel parameters.
2. Perform channel device testing, refer to Channel
Device Testing in this Chapter.
Problem Channel devices incorrectly cabled
Solution 1. Refer to cabling diagrams of both mux and
channel devices.
Channel device losing data
Problem Flow control not properly set
Solution 1. Verify flow control operations for the selected
channel device, refer to F0-F2 and F5-F6
commands in Chapter 4.
Chapter 7 - Troubleshooting Procedures
105