SIP Trunking
Elastic SIP trunks with auto-scaling, multi-region failover, and least-cost routing.
TryVox SIP trunks connect your PBX, SBC, or voice infrastructure to the PSTN. Our elastic trunking platform provides enterprise-grade voice connectivity with automatic scaling, multi-region failover, and intelligent least-cost routing.
Overview
SIP trunks enable you to send and receive phone calls through TryVox's global voice network. No capacity planning needed — trunks auto-scale to handle your traffic.
Authentication Modes
TryVox supports two authentication methods for SIP trunks:
- IP ACL — Whitelist your PBX/SBC IP addresses. Traffic from approved IPs is automatically authenticated.
- Credential-based — Use SIP digest authentication with username and password.
You can choose the authentication mode that best fits your infrastructure and security requirements.
Key Features
- Auto-scaling — No capacity limits. Trunks automatically scale to handle traffic spikes.
- Multi-region failover — Redundant SIP endpoints across multiple regions for high availability.
- Least-cost routing — Intelligent routing to minimize costs while maintaining quality.
- Real-time analytics — Monitor call quality, usage, and performance metrics.
Getting Started
Create a trunk for your account
Configure authentication using credentials or IP ACL
Point your PBX/SBC to the provided SIP domain
Start making and receiving calls
SIP Domain Format
Once you create a trunk, you'll receive a SIP domain in the format:
trunk-{trunk_id}.sip.tryvox.ioConfigure this as your SIP server/outbound proxy in your PBX or SBC.