IBM WaveRunner Manual page 24

• Verify that you chose the correct switch type in the ISDN/Analog
Modem ISDN configuration. Review the information you received
from the Phone Company when you requested ISDN service to make
sure that you configured the correct switch type.
• Verify that the line is configured for the correct grade of service
(voice/data, voice only, or data only).
B Channel Active indicator in the ISDN Port Monitor window does
not come on when you attempt to place or receive a call.
Description: Indicates that the D Channel is active but that the network
cannot complete a call to the remote device. You will often receive a fast
busy tone if this condition exists. This is usually caused by an ISDN
configuration error.
User Response: Open the ISDN Port Monitor window and watch the
window while making a call. If neither of the B channel Active indicators
come on, check the status window for any messages. Check the online
help to view detailed information about any messages you see. Verify that:
•
The phone number you have configured matches the phone number
you received when you requested ISDN service.
•
Your ISDN line does not use Electric Key Telephone System (EKTS)-
United States only.
•
The grade of service you have configured (voice/data, data only, or
voice only) is correct.
Also, if the grade of service you have for your ISDN phone line is
CSD (circuit switched data), there could be errors when making calls
with the modem application driver, which should normally use CSV
(circuit switched voice) or CSV/D (circuit switched voice/data). This
is also true if you are trying to make non-modem application driver
calls, which should normally use CSD, on an ISDN line that is
configured for CSV.
•
Configuration overrides are incorrectly set for outgoing calls (not
applicable to the modem function).
B Channel Active indicator is on but calls cannot connect with
remote device.
Description: Indicates an incompatible configuration in the Mwave
application driver.
User Response: Check the following conditions:
•
TCP/IP RFC mode set correctly.
The TCP/IP driver allows you to set the RFC 1294 mode On or Off. If
this mode is on for a non-RFC 1294 link, the ISDN/Analog Modem
24