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You can use Linphone to place secure calls. It supports: HD Audio and video call Secure communications (TLS, SRTP, zRTP) You would need to use a SIP service that supports authenticating and transporting traffic through TLS (not all do), like Linphone SIP service or Ostel. For detailed instructions on how to set up secure calls with Linphone see: ...


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I had a similar issue (but with calls to POTS lines) on my last android handset and couldn't resolve the issue with a factory reset ... so I returned it for a replacement from the store, it was well over a year old but apparently still covered by the manufacturer's warranty. The store clerk may be reluctant to replace your device if you can't replicate the ...


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As others have already answered: Yes, Skype originally did sometimes use other Skype users to route some calls. BUT!!! What the other replies didn't say was: This was actually A GOOD THING! Because Skype was initially Peer-2-Peer based not server based (as Microsoft made it) and all traffic was encrypted from end-to-end it gave Skype two big advantages ...


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As for the other part of the question: why are users sticking with it while there are better solutions? Two words: market penetration. Average John Doe doesn't care about security or abusing (in the olden days) other network users. He just wants to make calls, this just works and he's not going to persuade all his friends to use something else when ...


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Today, Skype do not route communication through other users machines. This is done by Microsoft servers in datacenters. But back in the days, in the early versions of the Skype protocol, every user with strong-enough bandwidth and not behind a NAT (with routable IP address), can become a supernode and route the traffic of other users that are behind NAT. ...



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