Introduction：MTG200 is cost-effective trunk gateway equipment specific design for open source market which ideal for open source based such as Asterisk/Elastix/Trixbox/Freeswitch as well as small & medium-sized telephony system. It built-in echo canceller and voice decoding function and several codecs such as G.711A/U, G.729, G.723, iLBC which provide perfect voice quality for users. •Cost-effective VoIP trunk gateway •Support echo cancellation, DJB, VNG, VAD and Qos •Voice codec option: G.711A/U,G.723.1 (option), G.729A/B(option), iLBC(option) •Simple Configuration, friendly GUI, strong handling capacity,stability system •Good compatibility, support Asterisk, Elastix, Freeswitchand Small and medium IPPBX platform Physical Interfaces •ISDNInterface 1/2/4*E1/T1, G.703, 120ΩRJ-48c •Network InterfaceWAN and LAN, 2 * 10/100M Base-TX, RJ-45 •RS232 ConsoleRJ-45, 115200bps Voice & Fax •G.711A/U law (G.723.1, G.729A/B, iLBC–optional)