SIP Trunking
Connect your existing PBX (Asterisk, 3CX, FreePBX, FusionPBX…) to the public network with unlimited channels.
- Per-second billing
- IP auth or registration
- Automatic failover
OG VoIPConnect to CapitalOG VoIP is your carrier-grade VoIP partner: SIP trunking, cloud PBX, virtual numbers and call center telephony — deployed in minutes, priced per second, supported 24/7.
From a single desk phone to a 500-seat contact center, OG VoIP scales with you on one reliable network.
Connect your existing PBX (Asterisk, 3CX, FreePBX, FusionPBX…) to the public network with unlimited channels.
A complete phone system in the cloud: extensions, IVR, queues, voicemail-to-email and call recording.
Local, national, mobile and toll-free numbers in 90+ countries, activated instantly with number porting available.
Queues, real-time supervision, click-to-call API and CRM integration to boost agent productivity.
Competitive A-Z rates with CLI and premium routes for carriers, resellers and high-volume traffic.
24/7 traffic monitoring blocks suspicious destinations and abnormal spikes before they hit your bill.
Redundant SBCs across multiple European data centers with automatic geo-failover.
Direct interconnects with tier-1 operators and HD codecs (Opus, G.722) end-to-end.
TLS/SRTP encryption, IP whitelisting, brute-force protection and GDPR-compliant hosting.
A dedicated account manager and a NOC that answers in under 5 minutes, day and night.
Give your customers a local number to call, wherever they are — and reach any phone on the planet at transparent rates.
Per-user pricing, per-second billing, cancel anytime. Volume and wholesale rates on request.
For freelancers and small teams.
For growing companies and sales teams.
For call centers, carriers and resellers.
*Fair use policy applies. All prices in US dollars (USD), excluding applicable taxes.
Share your team size, countries and call volume. We design the right setup — free of charge.
Numbers, extensions, IVR and routing are provisioned for you, or plug in your own PBX via SIP.
Log in from any device and make your first call. Our team follows up to fine-tune quality.
Yes. We handle number porting from your current operator in most countries, with no interruption of service.
None. Use our web and mobile apps, or any standard SIP desk phone or softphone (Yealink, Grandstream, Zoiper, MicroSIP…).
Our SIP trunks work with Asterisk, FreePBX, FusionPBX, 3CX, VICIdial and most standards-based IP-PBX systems.
We route calls over premium tier-1 paths, monitor MOS, jitter and packet loss in real time, and switch routes automatically if quality drops.
No. Our Starter and Business plans are month-to-month. Enterprise agreements can be tailored to your volume.
Tell us about your project — a VoIP specialist will get back to you within one business hour with a tailored quote.