3Com ACCESSBUILDER 7000 User Manual - page 35
Manual is about: TRIPLE MODEM MODULE
of
60
Troubleshooting Guide
3
-
5
Intermittent disconnects, high error rates, or excessive
retransmissions
Perform a remote digital loop test as described in
the AccessBuilder
7000 AT Command Reference
.
Modem establishes and disconnects a call
You may have a poor telephone line connection. Disconnect and dial
again.
The remote modem may have encountered an error correction
disconnect, where the modem is configured to establish a call using error
correction. If the modem cannot negotiate error correction, then a
disconnect occurs.
The remote modem may be in a forced error correction mode
(disconnect if there is no error control). Reconfigure your modem to
V.42/MNP or buffer correction and try again.
Perform a local analogue loop test.