The E4215B Internet Protocols Test Software application enables bi-directional functional IP testing over native LAN, ATM and Frame Relay. The E4215B brings IPoX encode and decode capability to the BSTS when used with the E1607A/E1609A ATM Stream Processor, E4209B Cell Protocol Processor, E4206A T1/E1 Frame Processor, E4207A V-Interface Frame Processor or E6282A Ethernet Frame Processor.