ADTRAN Express 3010 Manual 

Contents

ADTRAN Express 3010 Manual  Manual pdf 69 page image

Chapter 6. Troubleshooting61200239L1-20 Express 3010/3110 User Manual 6-3The Status buffer can also be accessed using the key sequence Ctrl+Vin the VT 100 menu system. Issue the AT command AT!V from a ter-minal emulation package such as HyperTerminal to invoke the VT 100menu system.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-homeAuto-detect Switch/SPIDs Remains at LinkDownThe Link Down condition persisting for longer than five minutes indi-cates a problem with the ISDN line provided from the telephone compa-ny. The ISDN physical layer device has not been able to synchronize tothe network. Ensure that the RJ-45 to RJ-11 telephone cable is correctly in-stalled between the Express and the ISDN wall jack and that the Expressis powered on. If the wall jack does not have ISDN installed on the twomiddle pins (tip, ring), the Express will never synchronize to the tele-phone switching equipment. Call the local telephone company and havethem check the ISDN line for correct operation.Express Not DetectedIf the Express Configuration program cannot detect the Express, veri-fy the following:1. The Express is powered on.2. No other applications are running that could be using the COMport to which the Express is attached. A Windows applicationdoes not have to be active to tie up a COM port. Be sure to checkthe Windows 95/98 Taskbar for any suspended applications(such as HyperTerminal) that may be using the COM port. If anyare minimized, these must be closed before starting the ExpressConfiguration program.3. If you are operating at 230.4 kbps, Switch 1 to Off (up). Also, con-firm that the computer has a 16650 UART.