Person-to-person realtime IP communications, like presence, VoIP and video applications, offer clear benefits for the enterprise as time- and money-savers. Unified functionality is now available, where all of the abo

sip协议的网络电话，并支持多种im协议如icq msn等还可以通过sip协议进行网络电话会议和视频-VoIP sip protocol, and supports a wide range of im agreements such as icq msn, etc. You can also sip protocol network and video conference call