CISCO - VOICE / FAX MODULE - PLUG-IN MODULE / 4 ANALOG PORT(S). SPECIFICATIONS - PRODUCT NAME: 4 PORT VOICE INTERFACE CARD - PRODUCT TYPE: VOICE INTERFACE CARD (VIC) - INTERFACES/PORTS: 4 X FXS - INTERFACES/PORTS DETAILS : 4 X FXS - COMPATIBILITY : CISCO UNIFIED COMMUNICATIONS 500 SERIES FOR SMALL BUSINESS CONDITION : NEW FACTORY SEALED. AVAILABILITY : IN STOCK. WARRANTY : 30 DAYS.