VoIPSUN PBX — Business Phone System
We develop our own VoIP PBX based on Asterisk. Cloud, hardware, or software — pick the deployment that fits your company. All features included, custom modifications at no extra cost.
We respond within 24 hours on business days
Choose your PBX variant
All three variants share the same software and the same features. The only difference is where the PBX runs.
Cloud PBX
The PBX runs in our TIER IV datacenter. No hardware, no maintenance — we handle everything. Ideal for companies that want a fast start without upfront investment.
from 1,000 CZK/month
HW PBX
A dedicated server in your server room. From compact 1U solutions to redundant servers with RAID and ECC. Full control over your infrastructure.
on request
SW PBX
We install the PBX on your hardware or virtual server running Debian Linux. Lowest acquisition cost, full flexibility.
from 10,000 CZK
Not sure which variant? Describe your situation and we'll recommend the best fit. Contact us →
Variant comparison
Same software, same features — the difference is in the deployment model.
| Recommended Cloud PBX | HW PBX | SW PBX | |
|---|---|---|---|
| Where it runs | Our datacenter (TIER IV) | Your server / server room | Your HW or VM (Debian) |
| Maintenance & updates | Handled by us | By us or by you | By you (with our support) |
| Upfront investment | None | Medium to high | Low |
| Monthly cost | from 1,000 CZK/mo | Support only | Support only |
| Concurrent calls | 5 / 10 / 30 | 15 / unlimited | 5 / 10 / 30 / 60 / 120+ |
| Scalability | Change plan | Upgrade hardware | Upgrade license |
| Best for | Companies without IT dept | Companies with own infrastructure | IT teams, specific deployments |
Why VoIPSUN PBX
In-house development, not reselling
We build the PBX from scratch on the open-source Asterisk platform. Modifications are handled directly — no waiting for a vendor.
All features included
IVR, call center, call recording, conferencing, CRM integration — everything is part of the base license. No premium modules.
One PBX, multiple locations
We connect offices across the Czech Republic and abroad into one system. We also operate voice services in Germany.
Updates included
Security patches and new features are included in the license. One-click upgrade via the web interface.
Full feature set included
Every PBX variant includes all features. Overview of key areas:
Protocols & Security
- SIP protocol
- TLS signaling encryption
- SRTP voice encryption
- Built-in firewall
- Encrypted HTTPS access
- ISDN2 / ISDN30 expansion
Call Management
- Intelligent routing (inbound / outbound)
- Time rules and day/night mode
- Calendar (iCAL, CalDAV, MS Exchange)
- IVR — interactive voice menu
- Complex number translation
- Backup providers (failover)
User Features
- Transfer with/without consultation
- Call parking and forwarding
- Voicemail
- Call recording
- Conference rooms
- Mobility extension
Call Center
- Inbound call queues
- Line groups and multilines
- CID lookup (caller name)
- Phone directory with click-to-dial
- Daily and monthly call limits
- CDR — call history and billing
Integration
- API for CRM systems
- Auto phone provisioning (TFTP/FTP/HTTP)
- Virtual FAX2MAIL
- DISA direct dialing
- Callback
- Custom routing scripts
System & Administration
- Web interface (CZ / EN)
- One-click updates
- OpenVPN client
- DHCP and NTP server
- SIP diagnostics and system status
- SSH access with root privileges
Web interface preview
Overview of the VoIPSUN PBX admin interface
Request a Quote
Describe what you need — we'll get back to you within 24 hours with a specific proposal.