What RTP is
RTP is the real-time transport protocol commonly used to carry voice media packets during a VoIP call. See also the glossary and FAQ.
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SRTP, RTP and SIP TLS secure calls
Understand RTP, SRTP, SIP TLS, signaling, media protection, limitations and related secure VoIP glossary terms.
What SRTP is
SRTP is the secure version of RTP. It can protect media packets with encryption and authentication where both sides support it.
What SIP TLS is
SIP TLS protects the signaling path used to set up, modify and end a call. It does not by itself encrypt the media stream. See also the glossary and FAQ.
Signaling and media
Signaling answers who is calling, where to route and when the session starts. Media is the voice payload exchanged during the active conversation.
When secure VoIP matters
Secure transport matters for privacy-conscious users, business calls, support operations and networks where traffic may be inspected. See also the glossary and FAQ.
Limitations
Security depends on endpoint support, correct configuration and the full route. A secure label should not be treated as magic protection for every hop.
Glossary links
Terms such as TLS, SRTP, RTP, SIP URI, ports, NAT, STUN and TURN are defined in the glossary for quick cross-reference. See also the glossary and FAQ.
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Explore Narayana CYou services for SIP, VoIP, internet calls, SMS sending, eSIM internet, SMS activation, secure calls and voice effects.
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Narayana CYou uses prepaid telecom balance with free registration, login access and top-up from 1 EUR.
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Find support links, account help, troubleshooting routes and telecom terminology for Narayana CYou users.
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Read Narayana CYou articles about SIP, VoIP, internet calls, SMS delivery, SMS activation, eSIM, SRTP and voice changer basics.
Open guideQuick FAQ
Does SIP TLS encrypt audio?
SIP TLS protects signaling. Audio protection normally requires SRTP or another media security method.
What is SRTP for?
SRTP protects RTP media packets where both sides support it.
Is secure calling guaranteed end to end?
Not automatically. Endpoints, route and configuration all matter.
Internal portal paths
home services SIP / VoIP internet calls SMS eSIM SMS activation FAQ glossary blog tags support
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