Yealink IP Phones have dual VoIP account supporting arrangement. Users can enjoy three way audio conferencing facility of these IP phones. Ideal for control room and office utilization purpose, these phones have one touch speed dial option, DND function, call mute and hold functions, XML browsing arrangement and so on. Communication system of these Yealink IP Phones conforms to DNS, LDAP and other protocols. Users can even execute USB call recording process with its USB flash drive. Multi language supporting function of these phones ensure improved communication process.