Can I use theTFM-561U on a digital phone line?
No, it is not compatible with digital phone lines. The TFM-561U is only compatible with analog phone lines. Connecting it to a digital line may damage the hardware....
 
How do I maintain Internet connectivity when receiving a call?
This requires the use of a modem-on-hold utility. You can use the included Netwaiting utility. Open the utility and click on the Help menu for instructions and information regarding this utility. ...
 
What do the LEDís on the TFM-561U indicate?
LINK: Off: No connection to ISP (Internet Service Provider) Solid (green): Connection to ISP (Internet Service Provider) DATA: Off: No data transmission Blinking (green): Indicates there is data transmission ...
 
What operating systems are supported for the TFM-561U?
Windows 7 (32/64-bit), Vista (32/64-bit), XP (32-bit) and Linux