Cloud Business Voice
A hosted PBX system with extensions, routing, voicemail, and full call control.
Learn more →Business phone systems that work with what you already have.
Cloud voice, hosted PBX, and SIP connectivity for businesses that want modern calling without replacing their existing phone system.
Works with FreePBX, 3CX, Asterisk, Microsoft Teams, and other SIP-based systems.
Business Voice12 active lines
Live
PBX Connectivity99.99% uptime
Operational
Desktop & MobileSoftphone included
Active
What is SBT Networks?
SBT Networks provides cloud business voice and SIP connectivity for companies that need reliable phone systems without replacing their existing infrastructure.
You can connect your current PBX, enable desktop and mobile calling, and manage your voice environment without downtime or retraining.
Everything you need for business calling
PBX Connectivity
Connect your existing phone system using SIP — no hardware replacement required.
Learn more →Desktop and Mobile Calling
Make and receive business calls from desktop or mobile with a built-in softphone included in every account.
Can I use this on desktop or mobile?
Yes. Every SBT Networks account includes a built-in softphone that works on desktop and mobile. Your team can make and receive calls using the same extensions, voicemail, and routing — from anywhere.
- Works on macOS, Windows, iOS, and Android
- No separate app licensing required
- Same phone system across all devices
- Ready immediately after setup
Does it work with my existing phone system?
SBT Networks connects directly to SIP-compatible phone systems, allowing you to upgrade your voice infrastructure without replacing what you already use.
- FreePBX
- 3CX
- Asterisk
- Microsoft Teams Direct Routing
- Other SIP-based systems
Why businesses choose SBT Networks
- No rip-and-replace required
- Works with existing PBX systems
- Fast deployment
- Full control over routing and connectivity
- Desktop and mobile calling included
Ready to upgrade your business phone system?
See how SBT Networks connects your existing infrastructure to modern cloud voice.
Frequently asked questions
Do I need to replace my phone system?
No. SBT Networks connects to your existing PBX using SIP. You keep your current system and upgrade your voice infrastructure around it.
Does this include a softphone app?
Yes. Desktop and mobile calling are included with every account at no additional cost.
What systems are supported?
FreePBX, 3CX, Asterisk, Microsoft Teams, and other SIP-compatible platforms.
How long does deployment take?
Most deployments can be completed in minutes. No extended onboarding or hardware installation required.