US Robotics COURIER - Page 94

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COURIER HIGH SPEED MODEMS
LD received: The remote modern sent an MNP error control
Link Disconnect request.
DISC: The remote modern sent a V.42 Disconnect frame.
Loop loss disconnect: The modern detected a loss of current
on the loop connecting it with the telephone company central
office. This usually occurs because the remote modern has
hung up: the central office drops current momentarily when
there is a disconnect at the other end of a call. Unless Register
S38 is set higher than zero, the modern immediately hangs up
at loop loss.
Unable to Retrain: After several attempts, disturbances on
the phone line prevented the moderns from retraining, and
they could no longer transmit or receive data.
Invalid speed: The modern is set to &Nl or higher, for a fixed
link rate, and the remote modern is not operating at the same
rate.
XID Timeout: The moderns failed to negotiate the V.42
Detection (XID Exchange) phase.
SABME Timeout (Set Asynchronous Balance Mode
Extended): The moderns failed this part of V.42 link
negotiation.
Break Timeout: Incompatible processing of a Break signal
occurred.
Invalid Codeword: The modern received an invalid V.42 bis
(compression) frame.
A Rootless Tree: The modern received an invalid V.42 bis
(compression) frame.
Illegal Command Code: The modern received an invalid V.42
bis (compression) frame.
Extra Stepup: The modern received an invalid V.42 bis
(compression) frame.
17 The modern returns a product configuration. If you have a
problem and call USRobotics' Technical Support staff, you
may be asked to read this screen.
Queries and Help Screens 8-5