Yealink offers a range of SIP based IP phones that are compatible with many popular IP-PBXs such as Digium’s Asterisk, Elastix & Xorcom. Yealink products are durable, provide good feature sets and are priced very competitively. With features such as PoE, backlit displays and HD Voice, their low cost phones compare nicely to the competition. Founded in 2001 in Xiamen, China, Yealink has been building VoIP handsets for 9 years. They have established themselves as a leader in many markets around the world and are gaining popularity in the USA.