The telephony layer your voice AI needs
Instant number provisioning, ultra-low-latency SIP trunking, and STIR/SHAKEN out of the box — so your voice agents sound natural and actually reach people.
The challenge
- Carrier blocking kills live calls before your agent even speaks — without STIR/SHAKEN attestation, major carriers flag your traffic as suspected spam and your call completion rates crater.
- Even 80ms of added latency creates unnatural pauses that break conversational AI. Shared SIP infrastructure with poor peering adds jitter and delay your LLM can't compensate for.
- Manually provisioning DIDs through web portals and waiting 24–48 hours to activate numbers makes it impossible to scale programmatically or spin up agents on demand.
How CloudVNO solves it
STIR/SHAKEN attestation by default
Every call placed through CloudVNO SIP trunking carries full A-level attestation. Your numbers are verified before the call ever reaches the carrier network, so your agents reach real people instead of voicemail.
Sub-50ms SIP with direct carrier peering
CloudVNO peers directly with Tier-1 carriers across 15+ PoPs. No shared media servers, no geographic bottlenecks. Your agents get the low-latency, high-quality audio path they need to sound truly natural.
Instant number provisioning via API
Provision a DID number, configure SIP credentials, and place your first call in under 60 seconds — all via a single REST API. No web portals, no waiting, no manual steps.
Products in this solution
Everything you need, integrated and billed together.
AI Voice
SIP trunking optimized for AI voice agents with low-latency media, STIR/SHAKEN, and real-time call control APIs.
Phone Numbers
Provision local, toll-free, and mobile DIDs in 60+ countries via API. Instant activation, no manual process.
Voice
Programmable voice calls with DTMF, call recording, real-time transcription, and conference bridging.
“We cut our call latency by 40ms the day we switched to CloudVNO SIP trunking. Our agents sound dramatically more natural.”
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