User`s manual

U.S. Robotics I-modem Command Reference
Querying • Page 12-10
GSTN (General
Switch Tele-
phone Network)
Clear Down
The connection was non-ARQ, and DTR was dropped from one side of the con-
nection; or the DISC frame was corrupted due to noise.
IdentiÞed
channel does
not exist
You sent a request to use a channel that is not activated.
Illegal
command code
The I-modem received an invalid V.42bis (compression) frame.
Inactivity
timeout
The I-modem detected no activity on the line for the duration speciÞed in Regis-
ter S19 (default is 0, timer disabled).
Incoming calls
barred
The device you called refused to accept your call.
Incompatible
destination
The device you called cannot accommodate your request (for example, it canÕt
match the data rate).
Information
element non-
existent or not
implemented
You sent a message that was processed successfully, even though it contained
unrecognizable information elements.
Disconnect
Reason Explanation