... .323, MGCP, IAX2, and net2phone protocol 2, Supports Skype, MSN and QQ software 3, USB2.0 port 4 ... "real-time" verification11, Compatible with PC's Internet phone application software12, Provides ringer generation for PC to PC ... call through existing IP phone applications13, Optional ITSP application software with credit for ... : 43 x 34 x 29cmWeight: 8.6kg USB Skype VoIP phone K-200W