Get Virtual Phone Numbers, Virtual fax-numbers, Virtual SMS numbers Multichannel numbers with HotTelecom. IP telephony is an innovative communication technology that uses the Internet or any other IP network for international and long distance telephone calls and fax transmission. Simply put it’s a telephone communication that operates over the Internet. Our specialists would need 1 working day to activate a personal virtual number. All work is carried out remotely via telephone or the Internet. You just need to install the software on the devices that will be used for calls, enter your username-password, and start making calls. Best VoIP Phone Service from HotTelecom. VoIP telephony will allow you to receive calls, forward calls to free operators, voice mail, DISA, etc.