Internal models are Plug and Play or jumper-selectable for Windows NT (excluding 3.51 with RAS applications), 3.11, 3.1 DOS and other operating systems. 

Voice Mail (requires soundcard) 
High-quality voice storage and playback, Easy message review, Multiple private voice mailboxes, Password protection 

Video Specifications 
Includes V.80 and VRPI synchronous modes for point-to-point videotelephony  

H.324 and H.323 compatible  

56Kv model includes on-board video support and jack for ZoomCam; ZoomCam requires Windows 95/98, and uses one IRQ and one DMA channel 

Operating Systems Supported 
Windows 95 or later, 3.1, 3.11, Windows NT (excluding 3.51 with RAS applications), DOS, and MacOS 

Regulatory Approvals 
FCC Parts 15B and 68 
UL, C-UL 
Industry Canada 
CE Approved 

Serial Interface 
Internal models have high-speed 16550 UART for faster data throughput. External models plug into serial port (RS-232C) 

Power Supply Cube (external only) 
120 VAC, 60 Hz input; 9 VDC, 600 mA nominal output (UL Listed) 

Physical Specifications 
Internal models fit standard ISA slot 

 External model is 5.25 in. x 6.5 in. x 1.5 in. 

Warranty 
Seven years