| | Avaya IPO 500 Trunk 4 (700417405) |  | | | 
Avaya IP500 Analog Trunk Card 4 Universal (700417405)Avaya IP500 Analog Trunk Card 4 Features Connects to IP500 base card - When connected to IP500 base card, it provides 4 loop-start analog trunk ports 
Also provides DTMF, caller ID (ICLID), busy tone detection 
Adjustable echo cancellation - Selectable to Off, 8, 16, 32, 64, and 128 milliseconds 
Power Failure Transfer - When fitted to an IP500 analog phone base card. During power failure, the first extension port (port 1) is connected to the first analog trunk (port 9) 
Maximum - 4 per IP500 control unit 
Compatibility & Requirements The IP500 Analog Trunk Card 4 is compatible with IP Office 4.0 or higher 
Requires an IP500 Digital Station 8, Analog Phone 2, Analog Phone 8, VCM 32, or VCM 64 base card with empty daughter card slot | 
 | 
 | 
 |