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SIPNEX
Cloud PBX · Hosted PBX

Cloud PBX. From your carrier.

A cloud-based PBX backed by an FCC-licensed carrier. A-level STIR/SHAKEN on every call. All features included. No platform markup. No feature-tier upselling. Just a business phone system that works.

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Carrier-Grade, Not Platform-Grade

SIPNEX hosted PBX runs on the same FCC-licensed carrier infrastructure as our SIP trunking. A-level STIR/SHAKEN attestation, CNAM registration, and carrier-direct call quality — not resold UCaaS.

All Features Included

Voicemail, auto-attendant, call forwarding, transfer, ring groups, time-based routing, call recording, conference calling, music on hold. No feature tiers. No upselling to unlock recording.

A-Level Attestation

Every call from your hosted PBX is signed with SIPNEX's own STIR/SHAKEN SP-KI certificate at A-level. Your business calls display as verified. Not B-level from a reseller.

Softphone + Desk Phone

Use SIP softphone apps on desktop and mobile, web-based phones, or physical SIP desk phones (Yealink, Polycom, Cisco, Grandstream). Agents can work from the office, home, or anywhere with internet.

Simple Management

Web-based admin portal for managing extensions, voicemail, routing rules, and call recordings. No server to maintain, no software to update, no hardware to manage.

Same Carrier as Your Call Center

If you also run a call center on SIPNEX SIP trunking, your hosted PBX and your dialer trunks share the same carrier — unified number management, consistent attestation, one support relationship.

What is a cloud PBX?

A cloud PBX is a complete phone system — extensions, voicemail, auto-attendant, call routing — run by a provider's infrastructure instead of a server in your closet. "Cloud PBX" and "hosted PBX" name the same thing; the industry uses both. Your phones and softphone apps register to the provider over the internet, and the provider handles everything from call control to the connection with the telephone network.

What most buyers never see is that a typical cloud PBX has two companies inside it: the platform selling you seats, and the carrier underneath it actually touching the phone network. SIPNEX collapses those layers — the cloud PBX solutions we host run on our own FCC-licensed carrier network, which is why every call leaves signed at A-level attestation instead of whatever the platform's upstream produces. Prefer to run your own PBX software? The same network is available as SIP trunking for any PBX.

Hosted PBX pricing, without the tier games

Business hosted PBX pricing is per extension, with local and domestic calling included — and that is the whole model. UCaaS platforms advertise a low seat price, then meter the features: call recording on the higher tier, analytics on the one above it, a 12-to-36-month contract to get the advertised number at all. SIPNEX includes every feature at one per-extension rate with no contract, because we are not reselling anyone's platform — how cloud PBX pricing actually works is worth five minutes before you sign anything.

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SIPNEX cloud PBX vs UCaaS platforms.

SIPNEXRINGCENTRAL / ZOOM
Provider typeFCC-licensed carrierPlatform company
STIR/SHAKENA-level (own cert)Varies (often B-level)
CNAM registrationIncludedLimited or extra
Feature tiersAll features includedPay more for recording, analytics
Call recordingIncludedHigher tiers only
Contract requiredNoOften 12-36 months
Platform markupNone — carrier-directSignificant
Also run a call center?Same carrier, unified DIDsSeparate voice provider needed

Frequently asked questions.

What is hosted PBX?
Hosted PBX (also called cloud PBX or cloud phone system) is a phone system managed entirely by a provider in the cloud. You do not install, manage, or maintain any phone system hardware or software. The provider handles call routing, voicemail, auto-attendant, extensions, and the connection to the telephone network. You use softphone apps, web phones, or SIP desk phones to make and receive calls.
Is cloud PBX the same as hosted PBX?
Yes — the two terms describe the same service: a provider-run PBX you reach over the internet instead of a phone system you install on-site. 'Hosted PBX' is the older telecom label; 'cloud PBX' is the same architecture named in cloud-era vocabulary. Whichever term a vendor uses, the questions that matter are identical: who is the carrier underneath, what attestation your calls get, and which features cost extra.
How is SIPNEX hosted PBX different from RingCentral or Zoom Phone?
SIPNEX is an FCC-licensed carrier. RingCentral and Zoom Phone are platform companies that buy carrier capacity from wholesale providers. The SIPNEX difference: A-level STIR/SHAKEN attestation signed with our own certificate (not inherited B-level), carrier-direct pricing without platform markup, CNAM registration included, and the same carrier infrastructure used by our call center customers. You get carrier-grade service without the UCaaS platform overhead.
Who should use hosted PBX vs SIP trunking?
Hosted PBX is for businesses that want a turnkey phone system without managing infrastructure — typically offices under 50 people without dedicated IT staff. SIP trunking is for operations that run their own PBX or dialer software (VICIdial, Asterisk, FreePBX) and need raw trunk capacity at wholesale rates. If you run a call center with predictive dialing, you need SIP trunking, not hosted PBX. If you need desk phones for your office staff, hosted PBX is simpler.
What features does SIPNEX hosted PBX include?
Extensions with voicemail, auto-attendant (IVR), call forwarding, call transfer, ring groups, time-based routing, call recording, conference calling, music on hold, softphone apps, and SIP desk phone support. All backed by the same carrier infrastructure as our SIP trunking — A-level STIR/SHAKEN, CNAM registration, and carrier-grade call quality.
Can I use my existing desk phones?
If your desk phones support SIP (most modern business phones from Yealink, Polycom/Poly, Cisco, Grandstream do), they work with SIPNEX hosted PBX. Configure the phone to register to our hosted PBX proxy with extension credentials. If you have analog phones, you need a SIP-compatible replacement or an ATA (Analog Telephone Adapter) to bridge them.
Can I keep my phone numbers?
Yes. Standard FCC number portability applies. Port your existing numbers to SIPNEX through the LNP process (7 to 14 business days for local numbers). Your numbers continue working on your current provider until the port completes. No service interruption.
What does hosted PBX cost?
SIPNEX hosted PBX is priced per extension with included local and domestic calling. No platform fees. No feature tier upselling — all features are included. Contact us for current per-extension pricing. Compare to RingCentral ($20-$45/user/month) and Zoom Phone ($10-$26/user/month) — SIPNEX delivers carrier-grade features without the platform markup.
Can I have both hosted PBX and SIP trunking?
Yes. Many operations use SIPNEX hosted PBX for office staff (sales managers, admin, reception) and SIPNEX SIP trunking for their call center floor (VICIdial, predictive dialing). Different tools for different teams, same carrier, same A-level attestation, unified number management.

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