User's Manual

30 QCT-7000/QCT-7200 Network Interface Unit User’s Guide
Data call or fax
transmission is
not successful
(continued)
• Verify that your modem operates with V. series
protocol. If it operates with Bell protocol instead
of V. series protocol, see “To change to Bell
modem protocol” below.
Transferred data
is corrupted
• Make sure the application software and modem are
set to hardware flow control (RTS/CTS).
To change to Bell
modem protocol
• Pick up the handset of the attached phone, dial
#62355 (#MBELL), and return the handset to the
cradle. All data calls will use Bell mode.
To return to V.
series mode
• Pick up the handset of the attached phone, dial
#68737 (#MVSER), and return the handset to the
cradle.
Call takes a long
time to connect
• Press # at the end of the dialed number. If this
reduces the time required for connecting, adjust
the send time (see page 18).
Unit will not turn
off when
unplugged
• Set internal battery backup switch to off (O) (see
page 24).
Constant static
background noise
that is reduced
while user is in
conversation
• Ensure that the telephone is at least 1.2 m (4 ft)
from the NIU and that the telephone cabling is
kept as far as possible from the antenna. The
cabling must not be wrapped around the antenna.