VoIP Solutions (Telephony)

Communication on a new level!

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ISDN is dead

Analog telephony was discontinued by the network operators and the support for that communication method has been promptly set. You should switch to a VoIP-based telephone system today so that you can continue to make phone calls. With 3CX we have a global partner at our side who provides us with the VoIP software. In addition to VoIP, the software is also capable of fax-over-IP (FoIP). So you still do not miss a single communication attempt.


With 3CX you always have your telephony with you! The easy-to-use interface, along with the web conferencing function, guarantees fun on the phone. The use of such a telephone system saves you not only time, but also money and you are optimally prepared for the future on top of that! In addition to the basic functions, the telephone system can also be extended by third-party tools (such as our CallNote), allowing seamless integration into, for example, an ERP of your choice.

3CX Advanced Certified Engineers

Our technicians are trained in dealing with 3CX and trained to solve even complicated problems in no time at all. They have been certified as "3CX Advanced Certified Engineer". In order to be able to provide fast, professional answers, every single technician at Sivver Software Solutions has been certified in the same way.

Client for mobile devices

With 3CX you always have your telephone system and all its functions with you. Instead of expensive call transfer, just set up the 3CX client on your smartphone. With it you can receive calls as usual and of course always have your contacts with you. You can also work here on several lines at the same time. In addition to telephony, all 3CX clients also offer the function of sending messages. Here you can easily send a text message to your colleagues. All you need is internet access with your computer or smartphone. Since the SIP and RPC protocols do not require enormous bandwidths, you can still communicate loss-free with your customers, even with an edge connection to the mobile service provider.

Not convinced yet? Get in touch with us for a demo appointment!

For small business owners and large corporations

3CX is universally applicable for small and medium-sized companies, as well as large corporations. There are no enormous running costs. An average 3CX installation at a startup starts at a price of € 5.00 per month. This includes the license and virtual hardware for the software installation. See for yourself!

Further Questions?

+49 (0) 5242 98390 30



Edition Comparison

Core PBX Features

Standard PRO Enterprise
Extensions Unlimited Unlimited Unlimited
Import / Export Extensions via CSV
SIP Trunks / Gateways Support
Call Routing by DID & CID (DDI)
Extensive Codec Support
Receive Voice Mail via Email
Calling Line Identification Presentation (CLIP)
Call Transfers (Blind & Attendant)
Calling Line Identification Restriction (CLIR)
Call Forward on Busy (CFB)
Call Forward on No Answer (CFU)
Hold (CW) incl. Custom Music on Hold
Intercom / Paging
Call Parking / Pickup
Busy Lamp Field (BLF)
Real Time System Status
Easy Backup and Restore (incl. Scheduled Backup)
VMware / Hyper-V / KVM Compatibility
Amazon, Google Cloud, Microsoft Azure
3CX SBC Connectivity
Voicemail Transcription
Custom FQDN
Custom SMTP Server

Office Productivity

Standard PRO Enterprise
Sennheiser Headset Integration
Auto Attendant / Digital Receptionist
Ring Extension & Mobile Simultaneously
Integrated Fax Server (Central and per User)
Supported SIP Phones Integration
Manage IP Phones Network Wide
Automatic Plug & Play Phone Provisioning
3CX Apps: Web Client, iOS, Android, Windows, Mac
Audio Bridge
Directory (Company & Private Phonebook)
Sync with Office 365 (Users’ Phonebook)
Call Query against DB & CRM
Hotel PBX Features incl. Fidelio Certified and Mitel Compatible
Web Conference Dial-In
Web Conferencing (incl. Polls, PDF-Share, Screen Share, Remote Assist & Record) 25 Seats 100 Seats 250 Seats

Call Center Features

Standard PRO Enterprise
Call Logging
Click2Call (Browser Extension)
Website Live Chat and Talk
Call Queue Group Rights Management
CRM Integration
Sync with Office 365 (Azure AD)
Call Queuing
Real Time Statistics & Monitoring
Supervisor Agent Status Override
SLA Alerting
Call & Queue Reporting
Call Recording Transcription and Search
Barge In / Listen In / Whisper
See Group Recordings

Enterprise Features

Standard PRO Enterprise
Call Flow Designer
Hot Desking
Scheduled Restore
Connect Remote Offices (Bridges)
Call Recording Restrictions (Start/Stop)
Skill based Routing
Customize IP Phone Logo
Inbuilt Failover