Techroutes TX‐350 is a is a new generation unified communication gateway equipped with modular & hot swappable interface boards of FXS/FXO/E1/T1 users can flexibly connect with SIP trunks, PSTN, legacy PBX, analog phones, fax machines and IP phones according to their business needs. TX‐350 is not only suitable for helping to build the telephony system of large and medium‐sized enterprises, but also can meet the branch office needs of large group enterprises and government agencies, helping enterprises and industry customers to establish a convenient and efficient IP telephone system.