... module, packet filter, IP port shielding, anti URL attack Support signaling, media, fax encryption, anti-interference and sniffing, AES standard 128 ... phone to phone calling or fax through internet and trunking gateway l support FXS and FXO 1:1 binding for 2 ... sending function. l Compatible l interoperatability l Compatiable with voice gateway,IAD,AG,MG devices with H.323 and SIP protocol ...