Installation guide

Modem Configuration Problems
13-10
Connected to LAT Service but Dial-Out Modem Does
Not Respond
Solution
If you can connect to the LAT service but you cannot communicate with the dial-out
modem, do the following:
Step Action
1 Verify that the physical port characteristics are configured correctly (Port and Device
Problems).
2 Verify that the port is configured correctly. Enter the following command. Substitute
the number of the modem port for 1:
Local> SHOW PORT 1
The SHOW PORT display will vary depending on the hardware you are using. For
information on configuring your access server for modem signals, refer to the
Network Access Software Management Guide.
3 Verify that you are using the correct cables to connect the modem to the access
server port. For information on supported cables, refer to your hardware
documentation.
4 Verify that you have configured the DTRWAIT port characteristic to be compatible
with the port device. Normally, DTRWAIT should be enabled for remote access
ports. When DTRWAIT is enabled, the access server can delay the assertion of DTR
until a connection is detected from a modem when an interactive user logs in.
5 If your access server supports alternate speed and your modem has alternate speed
(or fallback) capability, it is possible your modem might be using the alternate speed.
Set the access server modem port to the alternate speed while the connection is up
and perform your normal login sequence. If you are not successful, return the access
server modem port to the original speed.
6 Verify that the local switch characters for the port are not defined to be the same as
special characters required by the modem, such as Ctrl/B. Verify that the Break
characteristic is also compatible with the modem.
7 Verify that the modem is configured correctly. Ensure that the Data/Talk button is in
the Data position. For more information, refer to the modem documentation.