This feature requires you to have Caller ID service enabled on your line. To make sure that you have this service and that it is active, contact your telephone service provider.
Solution 2:
Windows Users: You may need to add an extra command to your Windows configuration to activate the recognition of the caller identification.
Do one of the following:
Windows Vista: Click Windows Start > Control Panel, click Hardware and Sound, then click Phone and Modem Options and click the Modems tab.
Windows XP and 2000: Click Windows Start > Control Panel, then double-click Phone and Modem Options and click the Modems tab.
Windows Me, 98, 95B and NT 4.0: Click Windows Start > Settings > Control Panel, then double-click the Modems icon.
Do one of the following:
Windows Vista, XP, 2000, Me, 98, and 95B: Select your modem and click Properties, then click the Advanced tab.
Windows NT 4.0: Select your modem and click Properties, then click the Advanced button on the Connection tab.
Add the following to the Extra Settings box and click OK: +vcid=1