Assessments - 2, GPA: 4.5 ( )

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If you see a picture of the modem with a red X, it means Wireless ACE cannot communicate with the modem. Check that: • The modem is On. • The cable is properly installed. • The antenna is on securely. • Dial-Up Networking has established a connection to the modem. • If you are on a LAN, ensure your machine’s IP address is not in the 10.x.x.x network (e.g.: 10.0.0.1 or 10.1.23.5, etc.) • If you receive an Error 629 or Error 630 while connecting to the modem with DUN, ensure there is nothing else on the COM port - software like HotSync, internal modems, or PC Card (PCMCIA) Page 14 AirLink Communications, Inc. User’s Manual modems. Also ensure you are set for the correct baud rate. Default is 9600. • see the Troubleshooting section for more. 5. Select the Maximize button (the arrows button). This causes Wireless ACE to display its Status Screen. 6. Select Tools> >>>>Communications Options. This causes ACE to display the Communications Options Dialog box. 7. Select Local Host (PPP Direct to Modem) radio button, ensure either “Only for Local” or “For Local and Remote Modems” is selected in the AutoDial-Up (Window DUN) box. 8. Select the OK button. AirLink Communications, Inc. August 9, 2001 Page 15 AirLink Raven II CDPD Modem 9. Select the Configuration button. This causes Wireless ACE to display its Configuration Screen: 10. Change the modem password. The default password is 12345. You need to change the password to your modem. Passwords can be case sensitive and include numbers. Use Options> >>>>Change Modem Password... or Ctrl-H. The password can be up to eight characters in length. 11. Double-click on the New Value column for each of the following to change it: • Side Preference – enter the side preference that your CDPD Service Provider gave you. This is important so you are not overcharged for "roaming" to another CDPD carrier. The CDPD RF channels are divided into side A and side B. This enables two carriers to provide service in the same area. The choices are: 1 = A only 2 = B only 3 = A preferred Page 16 AirLink Communications, Inc. User’s Manual 4 = B preferred • Device IP Address – enter the IP address you were given from your CDPD Service Provider. 12. If you know of other parameters you have to change, you may do so now. Otherwise go to step 13. Note: If you change the COM port speed, reset the modem before connecting to it at a different speed. If the baud rate is changed, it will have to be changed in both “CDPD Modem PPP” properties and Control Panel> >>>>Modems> >>>>Airlink CDPD Modem> >>>>Properties. (See AT command reference for details on other parameters.) 13. Select Write to Modem to send the updated information to the modem. You'll be prompted for your new password that you entered earlier. If you did not change it, then the default modem password is 12345. It is highly recommended that you do change your password (Use Ctrl-H to change it). 14. Reset your modem when prompted to do so. 15. When the modem comes back up in ACE, click on the Status button to see that the modem is properly registering now. The next section covers some information on reading the lights on the front of your modem and verifying your modem is operating. AirLink Communications, Inc. August 9, 2001 Page 17 AirLink Raven II CDPD Modem 2.4 Finding CDPD Service When the modem is reset, it will start searching for CDPD service on the side specified. The only LED that will be on is the power On LED. The lights will do two quick sweeps from right to left as a self-check. Scanning -The modem will scan all the channels on the side, sort the channels by the signal strength (RSSI) and begin searching for CDPD service starting with the highest RSSI, the strongest signal. The Chan LED will be flashing while it scans. AirLinkCommunicationsChanLinkReg TxRxRSSI ErrReset CDPD Raven II Pwr Acquiring Channel -When the modem finds a CDPD channel and acquires synchronization, the Chan LED will be solid on. The RSSI LED might be solid on, fast blinking, slowing blinking or off, depending on the signal strength. AirLinkCommunicationsChanLinkReg TxRxRSSI ErrReset CDPD Raven II Pwr Establishing a Link -Once the modem acquires a CDPD channel, it will request a Temporary Equipment Identifier (TEI), resolve the link parameters, and establish the link layer connection. Once these steps are accomplished, the Link LED will be illuminated. The TxRx LED will flash briefly during this time. AirLinkCommunicationsChanLinkReg TxRxRSSI ErrReset CDPD Raven II Pwr Page 18 AirLink Communications, Inc. User’s Manual Registering -After acquiring a link, the modem will perform an encryption key exchange, and register its IP Address. If the registration is successful, the Reg LED will be turned on. Again, the TxRx LED will flash briefly during this time. AirLinkCommunicationsChanLinkReg TxRxRSSI ErrReset CDPD Raven II Pwr If the Reg light flashes then this is indicating your side preference is set for either “A-side preferred” or “B-side preferred” and that th...

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