Many company chose to use a domain name in registration or auto provision, etc. then there is a prob
2015-03-11
    These phone model can support CDP since version 80.T19_E2/T21_E2T23/T27/T29T40/
2015-11-18
When there is a PC connected to the PC port of the IP phone, large data flow on PC will take up larg
2015-04-18