Your calls need infrastructure that doesn't flinch at scale.
Connect your voice infrastructure to the global PSTN with carrier-grade SIP trunks — low latency, high concurrency, and instant setup. Built for AI calling platforms, CCaaS providers, and VoIP developers who need reliable call termination and origination at any volume.
Capabilities
One trunk. Every direction. No ceiling.
Inbound and outbound on a single SIP trunk, with elastic concurrency, instant credentials, and global PSTN reach. No split configuration, no channel limits, no waiting.
Inbound and Outbound Calling
Receive calls on provisioned DIDs and make outbound calls to 190+ countries through a single SIP trunk. No separate trunks for inbound and outbound, no split configuration.
Low Latency, High Reliability
Calls route through Vobiz's global media infrastructure at ~80ms average latency. Redundant routing handles failover automatically. No manual intervention needed when a path goes down.
High Concurrency Channels
Scale from 10 concurrent calls to thousands without re-provisioning or renegotiating capacity. Concurrency scales with your usage — no ceiling, no lead time.
Instant SIP Credentials
Generate SIP username, password, and server address from the dashboard or via API. No wait for a provisioning team. Credentials are live the moment they are created.
Codec and Protocol Flexibility
Support for G.711, G.729, and Opus codecs. Works with any standards-compliant SIP stack — no proprietary client, no SDK required to connect.
Why Vobiz
Why Vobiz SIP trunking works better for AI voice.
Latency
Lowest telephony latency added to your voice AI pipeline
AI voice agents run STT, LLM, and TTS in sequence — each adds latency. By the time audio reaches your model and a response comes back, you have already used most of your budget. The telephony layer needs to add as little as possible. Vobiz delivers ~80ms end-to-end, so the rest of your pipeline has room to work.
80MSConcurrency
On-demand, elastic concurrency with no hard limits
API calls and agent logic scale horizontally. PSTN connectivity usually doesn't. Hard channel limits on traditional SIP trunks mean your platform hits a ceiling before your product does. On Vobiz, concurrency grows with your call volume, on demand, and instantly.
Elastic channel capacityHow It Works
From SIP credentials to live calls in under 10 minutes.
Create your trunk.
Sign into the Vobiz dashboard and generate your SIP credentials: server address, username, and password. Configure your inbound and outbound routing preferences.
Connect your infrastructure.
Point your PBX, contact center, or AI voice platform to your Vobiz SIP trunk using the credentials generated in Step 01. Works with any standards-compliant SIP stack.
Make and receive calls globally.
Your trunk is live. Inbound calls route to your endpoint. Outbound calls terminate to 190+ countries. CDR logs and real-time call analytics available from the first call.
All calls are routed in compliance with applicable telecommunications regulations in each country. Outbound CLI is handled in line with local number presentation rules, so your calls show the right number in the right format in every market.
Compliance Infrastructure
Regulated-market ready. By design.
Forget raw audio streams with compliance bolted on. Get encrypted media streams, consent signalling, PII redaction, and audit logs out of the box.
