Locked to a single provider
Change phone systems and you are often forced onto the vendor's carrier too, giving up rates and relationships you spent years building.
Integrations
Keep your own carrier, run Voxbi on top
Voxbi supports bring your own carrier (BYOC): connect the SIP trunk provider of your choice directly to the cloud PBX. Migrate an existing setup or run several carriers across locations, without locking yourself into a single voice provider. Voxbi is fully SIP-compliant, so any standards-based provider can be integrated.
- Any standards-based SIP provider
- Keep your existing contracts
- Hosted in the EU
One carrier shouldn't decide everything
One region, one carrier, no options
Multi-site and cross-border teams frequently need different providers per country, but most systems only speak to one.
Numbers you can't move
In some countries a number can't be ported. Tie it to the wrong system and you risk losing it, or your service continuity, in a switch.
What bringing your own carrier lets you do
Route across multiple carriers
Send calls through more than one carrier for high availability, so a single provider outage doesn't take your phones down.
Isolate by region or business unit
Point different locations or departments at the carriers that suit them, all under one Voxbi phone system.
Keep control of your numbers
Maintain number ownership and porting on your terms, including numbers in countries where portability isn't possible.
Local telephony where it pays
Use local carriers for better pricing or to meet regional regulatory requirements, without leaving the Voxbi platform.
Any SIP provider fits
Voxbi is fully SIP-compliant. Deep experience in SIP signaling and header manipulation means even complex or non-standard setups can be supported.
Legacy lines welcome
Still on ISDN, analog, or PRI/E1? Mixvoip can supply and configure VoIP gateways to bring those lines into Voxbi while you modernize.
Certified, compatible, or simply SIP
Mixvoip maintains a list of SIP trunk providers that are either certified (fully tested by the engineering team for long-term reliability and feature support) or confirmed compatible (successfully deployed by customers). Only a selection is published, but any standards-based SIP provider can be integrated.
If you run legacy carriers or infrastructure, VoIP gateways bridge analog, ISDN, and PRI/E1 lines directly into Voxbi, so you can preserve existing services while moving the phone system to the cloud.
Frequently asked questions
Can I keep my current phone provider?
Yes. That's the point of BYOC: connect your existing SIP trunk provider to Voxbi and keep the rates and contracts you already have. Voxbi runs on top of the carrier you already use.
Which SIP providers work with Voxbi?
Any standards-based SIP provider. Mixvoip publishes a list of certified and confirmed-compatible providers, and thanks to deep SIP signaling experience, even complex or non-standard implementations can usually be supported.
Can I use more than one carrier?
Yes. You can route across multiple carriers for high availability and isolate services by region or business unit, all under one Voxbi system.
Do you support ISDN, analog, or PRI lines?
Yes. Mixvoip can supply and configure VoIP gateways that integrate analog, ISDN, and PRI/E1 lines into Voxbi, so legacy services keep working during a migration.
What happens to my numbers?
You keep ownership and control of porting. BYOC also lets you maintain numbers in countries where porting isn't possible, by keeping them with the carrier that holds them.
Bring your carrier. Keep control.
Start a free trial and see how Voxbi runs on top of the SIP trunk provider you already use.