ADTRAN 3360.9VU01, XRT Power/Line LED, B1, and B2 LEDs Flash Green, Dial-Up Connection Problems

Chapter 5. Troubleshooting

Power/Line LED, B1, and B2 LEDs Flash Green

This indicates a configuration problem. Verify the following information is correct:

•Switch Type

•Service Profile Identifiers (SPIDs)

•ISDN Phone Numbers

This information can be viewed by choosing the Status Register button under the Diagnostics tab of the ADTRAN Express Configuration Wizard window or the Configuration Screen in the VT 100 menu system. The Link Status should indicate Link Up if all configuration information is correct and the unit is properly connected. If the link status is good and calls still can not be placed, review the section for Dial-Up Connection Problems.

Auto-Detect can be used under the Wizard button in the AD- TRAN Express Configuration software (or by using the Auto- Detect SPIDs/Switch option in the Configuration screen of the VT 100 menus) to automatically detect the SPIDs and the Switch Type.

Look for the following with the COM port setup:

•IRQ conflicts.

•Wrong DTE speed.

•Use Microsoft diagnostics (msd.exe) to verify the COM port has 16550 UART (for speeds of 115.2 kbps and below) or a 16650 UART (for speeds up to 230.4 kbps).

•Proper COM driver is installed (not provided) to support DTE speeds above 19.2 kbps.

Verify the correct protocol is selected:

•PPP or V.120 generally for Internet applications

•V.120 or Async BONDING for work-at-home

Dial-Up Connection Problems

Many connection problems can be diagnosed by viewing the status buffer message returned from the ISDN network and the Express XR/XRT. These messages are accessed by choosing the Status Buffer button in the Diagnostics tab of the ADTRAN Express Configuration window.

48 Express XR/XRT Quick Start Guide 61200.153L1-13