User`s manual

U.S. Robotics I-modem Command Reference
Querying • Page 12-16
User busy Though the userÕs equipment is compatible with the call, it has no resources to
handle the call.
User information
discarded
Could not deliver user information to the remote user as requested.
XID timeout The devices failed to negotiate the V.42 Detection (XID Exchange) phase.
Disconnect
Reason Explanation