Multitech MMH900, User Manual

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Chapter 6 - Operating Procedures
Composite link down with CTS, XMT and REMOTE DWN LEDs
ON
Problem Composite Link cabling
Solution 1. If internal composite link modem is installed,
check Composite Link cabling for loose connection.
2. If external composite link modem is installed,
check composite link cable for loose connection or
bent pin.
Problem Not receiving data from remote mux
Solution 1. Verify that both muxes are powered ON.
2. Verify that both muxes are connected to
communications line.
3. If external modems are used, verify that they are
powered ON and connected to the communication
line and Mux composite link.
Problem Faulty Communication line
Solution 1. Call phone company and verify communicaiton
line
Composite Link down with CO, CTS, XMT and RCV LEDs ON
and REMOTE DWN LED ON
Problem Both muxes set up for down line loading.
Solution 1. Remove front cover of both muxes and verify if
DIP-Switch 1 is in the UP (ON) position.
2. Place DIP-Switch 1 on one of the muxes in the
DOWN (OFF) position.
Problem Internal modem speeds on local and remote muxes
do not match.
Solution 1. Verify internal modem’s speeds with $L
command.