How can I tell if ZRTP is enabled in a Twinkle SIP call?

Posted by komputes on Ask Ubuntu See other posts from Ask Ubuntu or by komputes
Published on 2012-03-28T22:06:19Z Indexed on 2012/03/28 23:45 UTC
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Filed under:

security

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encryption

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voip

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sip

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twinkle

I recently attended a talk about GNU Telephony. I was informed that Twinkle supports ZRTP for encrypted SIP calls.

I went into Edit > User Profile > Security and made sure that ZRTP was enables and that all boxes were checked. I asked a friend to do the same and then we called each other. There is no immediate indication that I can see that the call is secure.

How can I tell if ZRTP is enabled in a Twinkle SIP call?

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