User's Guide

28 QCT-7000/QCT-7200 Network Interface Unit User’s Guide

80-67736-1 Rev. X1

PROBLEM SOLUTION

Data call or fax

transmission is

not successful

(continued)

• Try dialing the number from a touchtone

telephone without the #3282 preﬁx. Did you hear

a busy signal, voice, or modem tones?

– If you heard a busy signal, call the number at a

later time.

– If you heard a voice, verify that the number you

dialed is correct, or request that a data device

(for example, a computer and modem) be

turned on at the location you called.

– If you heard modem tones, verify that your

computer's communication software was

properly installed and conﬁgured.

• Verify that the timeout of your modem hardware is

greater than 90 seconds.

– If the modem hardware timeout is less than 90

seconds, consult your modem user guide and

adjust the modem timeout with AT commands.

• 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.

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

• Adjust the send time (see page 16).

Unit will not turn

off when

unplugged

• Set internal battery backup power supply switch

to off (O) (see page 21).

niu.book Page 28 Friday, January 8, 1999 11:04 AM