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Phone systems
Modern communications.

Cloud VoIP, call-centre features and smartphone integration. ISDN systems are over in 2026. We bring you to cloud PBX with clear advantages: mobile-first, CRM integration, transparent costs.

ISDN is over

Cloud PBX isn't hype.

ISDN was switched off in Germany end of 2022. Anyone without cloud PBX is running on temporary stopgaps. We migrate to 3CX, Microsoft Teams Phone or Zoom Phone — with number porting, smartphone app and optional call-centre features.
Alexander Ohl Alexander OhlFounder · Pragma-Code
Services · 03

Three telephony building blocks.

What we typically deliver for phone systems.

Cloud phone systems (VoIP)

3CX, Teams Phone or Zoom Phone — on cloud infrastructure, with central admin portal and number porting.

Call-centre features

Queues, IVR, skill-based routing, call recording and statistics — optional add-on.

Smartphone integration

One number everywhere: mobile app with same extension, click-to-call from CRM, voicemail-to-email.

Process · 04 steps

From ISDN farewell to cloud connection.

Structured, with no telephony outage.

01

Needs analysis

Numbers, users, bandwidth, desired features — and cloud PBX vendor comparison.

02

Concept & quote

Vendor recommendation, hardware list (headsets, IP phones), cost comparison vs current.

03

Migration

Number porting, parallel run with old PBX during cut-over, staff training.

04

Training & support

User training for mobile app and standard features, ongoing admin support, monthly reporting.

Available for new telephony projects

From ISDN to the cloud.

Free telephony consultation with vendor comparison and cost estimate in 60 minutes.