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• Enterprise SIP, built in: Wideband codecs are part of the carrier stack, not a bolt-on. Telnyx handles STIR/SHAKEN attestation, AMR-WB, G.722, Opus, and custom trunk configurations natively. No third-party SIP provider required.
• Sharper conversations: Wideband audio doubles the frequency range of standard narrowband calls, making voices clearer and reducing listener fatigue on long calls.
• Better AI pipeline input: Higher-fidelity audio feeds cleaner signal into colocated STT models, improving transcription accuracy for voice AI workflows.
• No trade-offs: G.722 is zero-config; Opus gives you top-tier quality when you need it.
• Consistent across regions: Every LiveKit region supports both codecs, so there's no feature gap regardless of where your traffic lands.

Getting Started

1. G.722: Ensure your SIP endpoint advertises G.722 in its SDP offer. Most modern endpoints do this by default, and LiveKit will negotiate it automatically.
2. Opus: Enable SRTP on your SIP trunk configuration. Once SRTP is active, LiveKit will negotiate Opus when the endpoint supports it.
3. Route your SIP traffic to any LiveKit region (SFO3, NYC1, ATL1, or SYD1).

Use G.722 for broad compatibility with existing SIP hardware, or Opus for maximum fidelity when SRTP is feasible. See the LiveKit Telephony documentation for full configuration details.