14
CONNECT 0300/REL
16
CONNECT 1200/REL
17
CONNECT 2400/REL
18
CONNECT 4800/REL
19
CONNECT 9600/REL
20
CONNECT 19200/REL 21
CONNECT 38400/REL 26
CONNECT 57600/REL 27
NEGOTIATION PROGRESS CODES
CARRIER 300
40
CARRIER 1200/75
44
CARRIER 75/1200
45
CARRIER 1200
46
CARRIER 2400
47
CARRIER 4800
48
CARRIER 7200
49
CARRIER 9600
50
CARRIER 12000
51
CARRIER 14400
52
COMPRESSION: CLASS 5
66
COMPRESSION: V.42BIS
67
COMPRESSION: NONE
69
PROTOCOL: NONE
70
PROTOCOL: LAP-M
77
PROTOCOL: ALT
80
Section Six - Troubleshooting
This section describes some of the common problems
you may encounter while using your modem. If you can not
resolve your difficulty after reading this chapter, contact your
dealer or vendor for assistance.
Modem does not respond to commands.
1.
Make sure the communication software is configured to
“talk” to the modem on the correct COM port and IRQ setting
(same COM port and IRQ setting as the modem). Your
communication software must know which address your
modem is using in the system in order to pass data to it.
Similarly, IRQ settings must be set correctly to receive data
from the modem.
2.
Make sure that your modem is initialized correctly. Your
modem may have been initialized to not display responses.
You may factory-reset the modem by issuing AT&F and
press ENTER. The factory default allows the modem to
display responses after a command has been executed.
3.
Make sure the baud rate setting in your software is set to
57600, 38400, 19200, 14400, 9600, 2400, 1200, or 300 bps.
An incorrect baud rate prevents the modem from operating
properly.
4.
Make sure that the modem is not conflicting with another
COM port or IRQ in a non-PnP system.
Modem does not dial.
