Knowledge Base
Security & Encryption
TLS, SRTP, ZRTP, privacy, permission handling.
2 answers · Part of 46 across the knowledge base
How do I enable encryption in Groundwire?
Groundwire supports TLS for SIP signaling, SRTP for media, and ZRTP for end-to-end voice encryption. Enable each in Settings → SIP Accounts. Your VoIP provider must support TLS and SRTP for those layers; ZRTP is negotiated end-to-end between Groundwire users.
Is Groundwire secure?
Yes. Groundwire supports TLS for SIP signaling encryption, SRTP for media encryption, and ZRTP for end-to-end call encryption. SIP credentials are stored locally on-device. Push notifications are delivered via SIPIS without exposing call content.