Specifications

Chapter 8. Troubleshooting
8-2 Express 3000 SP User Manual 61203153L3-20
Dial-up connection problems.
A variety of causes may result in dial-up connection problems.
1. Status Buffer messages returned from the ISDN network and the
Express 3000 SP can help diagnose many dial-up connection
problems.
a. Access these messages by clicking
Status Buffer
(Local or
Remote) on the
diagnostics
option on the ADTRAN
Express Configuration window.
b. Alternatively, you can access the
Status Buffer
by using the
key sequence
Ctrl+V
in the VT-100 menu system. (To invoke
the VT-100 menu system, issue the AT command
AT!V
from
a terminal emulation package such as HyperTerminal.)
2. Ensure the following to verify the correct protocol is selected:
• PPP or V.120 generally for Internet applications
• V.120 or Multilink PPP for work-at-home