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If I named a contact &quot;crazy x girlfriend&quot;<br />
Please tell me she can't see that when notified that I'm a new viber user !
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Ive loads of contacts listed I never want to speak to again. <br />
They are listed so I will know its them calling and i wont answer!<br />
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So Ive just installed viber and &quot;sync&quot;<br />
<br />
Does it send a hello to everyone on my behalf that has a viber account :-( <br />
Also do people know when Im online?
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Ive loads of contacts listed I never want to speak to again. 
They are listed so I will know its them calling and i wont answer!

So Ive just installed viber and "sync"

Does it send a hello to everyone on my behalf that has a viber account :-( 
Also do people know when Im online?

viber - does it tell everyone on your contact list (that have a viber account) you have just joined?

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).

Voice Over IP

IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.

IP Telephony

The iPhone is a smartphone made by Apple Inc. It and the iPad, along with several other mobile devices from Apple, run on the iOS operating system, which has its own topic, as does the iPad for device-specific questions. Native iOS applications are written in Objective-C or in Swift using the Cocoa Touch frameworks or HTML5 compiled with the help of a package manager such as Adobe PhoneGap; a common IDE is Xcode.