Your Business Phone System, Without the Headaches
Stop paying for overpriced phone service locked behind long-term contracts. DiaPBX gives you enterprise-grade calling features — extensions, voicemail, IVR, call recording — at a fraction of the cost. Set up in minutes, not weeks.
The Old Way
- ✗ Expensive on-prem hardware that breaks
- ✗ 2-3 year contracts with hidden fees
- ✗ Need an IT team just to add an extension
- ✗ Paying for features you don't use
- ✗ Landline bills that keep going up
The DiaPBX Way
- ✓ Cloud-hosted — no hardware to maintain
- ✓ Month-to-month, cancel anytime
- ✓ Self-service portal or we handle it for you
- ✓ Only pay for what you need
- ✓ Flat, predictable monthly pricing
Everything Your Business Needs
Visual Voicemail + AI Transcription
See every voicemail like email. AI transcripts on every message. Play, forward, move, delete — no dial-in required. Learn more →
Call Forwarding & Follow Me
Never miss a call. Route to your cell, home office, or another team member automatically.
Ring Groups & Queues
Sales team, support team, front desk — ring the right group and distribute calls evenly.
IVR & Auto Attendant
"Press 1 for sales, 2 for support..." Professional call menus that route callers instantly.
Call Recording
Record calls for training, compliance, and quality assurance. Searchable call logs included.
Conference Rooms
Host team meetings and client calls with built-in conference bridges. No third-party apps needed.
Voicemail That Reads Like Email
Stop dialing in. Stop listening to messages in the order they were left. Visual voicemail puts every message in a list with AI-generated transcripts, so you can scan, prioritize, and respond in seconds.
AI Transcripts on Every Message
Whisper-powered transcription cached in your dashboard and your inbox. Read voicemail, search it, paste it into a ticket.
One-Click Playback
Real audio controls. Scrub, rewind, replay a 30-second message in 5 seconds — no more "press 1 for next."
Forward, Move, Organize
Forward a voicemail to a coworker's mailbox in one click. File into folders — Work, Family, Friends, Urgent.
Auto-Logs to DiaCRM
Every voicemail with its transcript lands on the caller's contact record automatically. Full context, zero manual entry.
Up and Running in 3 Steps
Sign Up
Tell us how many extensions you need. No contracts, no commitments.
We Configure
We set up your extensions, phone numbers, IVR, and call routing. You approve it.
Start Calling
Plug in your phones or use our softphone app. You're live.
Simple, Honest Pricing
No setup fees. No contracts. No surprises.
Includes extension, voicemail, local number, and all features. Volume discounts available.
Get a QuoteFrequently Asked Questions
Does visual voicemail cost extra?▾
No. Visual voicemail with AI transcription is included free on every DiaPBX account. No add-on, no tier upgrade, no extra line item. Read every voicemail in your dashboard, get them by email, and have them auto-logged to DiaCRM contact records — at no additional charge. See the cost breakdown →
Can I keep my existing phone number?▾
Yes. We port your existing numbers over. The process typically takes 7-10 business days and there's zero downtime — your old number will ring on your new DiaPBX system seamlessly.
Do I need special phones?▾
DiaPBX works with any standard SIP phone. We recommend Grandstream phones for the best experience and can ship pre-configured phones directly to your office. You can also use our DiaVoice Go softphone app on your computer or mobile device.
What happens if the internet goes down?▾
Calls automatically forward to your backup number (cell phone, answering service, etc.). We configure failover routing during setup so you never miss a call, even during an outage.
Is there really no contract?▾
Really. Month-to-month billing. Cancel anytime with 30 days notice. We keep customers by being good, not by locking them in.
Ready to Upgrade Your Phone System?
Join hundreds of small businesses that made the switch to DiaPBX.