D-6
AT Command Reference
Loop loss disconnect:
The modem detected a loss of current on the
loop connecting it with the telephone company central office.
This usually occurs because the remote modem 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 modem immediately hangs up at
loop loss.
Unable to Retrain:
After several attempts, disturb ances on the
phone line prevented the modems from retraining, and they
could no longer transmit or receive data.
Invalid speed:
The modem is set to &N1 or higher, for a fixed link
rate, and the remote modem is not operating at the same
rate.
XID Timeout:
The modems failed to negotiate the V.42 Detection
(XID Exchange) phase.
SABME Timeout (Set Asynchronous Balance Mode Extended):
The
modems failed this part of V.42 link negotiation.
Break Timeout:
Incompatible processing of a Break signal occurred.
Invalid Codeword:
The modem received an invalid V.42
bis
(compression) frame.
A Rootless Tree:
The modem received an invalid V.42
bis
(compression) frame.
Illegal Command Code:
The modem received an invalid V.42
bis
(compression) frame.
Extra Stepup:
The modem received an invalid V.42
bis
(compression) frame.
Call Teardown:
The T1 Card initiated a disconnect.
Link Security Disconnect Reasons
Possible reasons the answering modem may have hung up during
a Link Security session are as follows:
Security Abort:
The modem hung up because it received an invalid
password three times.
Prompting Not Enabled:
The modem hung up because the
originating modem did not send an autopass password, and
prompting wasn't enabled.
Summary of Contents for MP/16
Page 4: ......
Page 12: ...1 6 Overview...
Page 36: ...2 24 Installation...
Page 150: ...D 26 AT Command Reference...
Page 162: ...E 12 Modem Testing...
Page 168: ...F 6 Warranty and Regulatory Information...
Page 178: ...G 10 Technical Specifications...
