Maximize Performance with Optional Interface Cards. These Smart Interface Cards (SICs) provide a variety of expansion options that let you enhance 3Com Router 5012 performance to optimize network operation. Customize your network to your business needs. * Provides 2 FXS ports for connection to analog telephones * Facilitates scalable and secure network operation * Maximizes interface density and slot efficiency * For use with 3Com Router 5012 Product Specifications * Ports: 2 * Connector: 2 x RJ-11 * Interface standard: Subscriber line interface, ITU Q.512 * Dialing: DTMF * Bandwidth: 300 to 3400 Hz * Interface protection: ITU K.20 over-voltage and over-current * DSP: 2 channels Package Contents * Interface card This Product Supports... 3Com® Router 5012 Product * 3C13701