Business Need

VoIP Solution to ISDN Switch Off

Assist businesses seamlessly migrate from ISDN to VoIP.

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Compatible IP Phones

PSTN and ISDN are coming to an end.

As large telecom companies successively announcing to switch off ISDN and PSTN, it’s time for businesses to consider moving from their traditional system to the IP-based one. Yeastar provides a reliable and cost-effective IP-capable portfolio to empower businesses with a future-proof phone system.

  • Retain Legacy system
  • All-IP solution
  • Unified Communications

What makes us a golden opportunity

good Products

Complete Product Portfolio

From VoIP Gateways to the on-premises S-Series and P-Series PBX system, to Cloud PBX system, Yeastar enables businesses to make an easy switch to VoIP no matter the legacy system is to be retained or not.

Cost Saving

Reduced Telco Costs

Yeastar PBX system greatly reduces communication fees by guaranteeing free internal calls and low-cost external calls through SIP trunk, making moving to VoIP a cost-effective choice for your organization.

UC Solution

Easy Unified Communications

With Linkus UC Client, supported by Yeastar S-Series VoIP PBX, P-Series PBX System, and Cloud PBX, employees can make and receive calls anywhere, anytime, with their cellphones or desktops.


High Flexibility

Featuring a unique modular design, Yeastar S-Series and P-Series PBX System can be customized with various telephony interfaces, giving you the flexibility to meet the ever-expanding communications needs.

PBX Management

Simple & Easy Management

Within a single PBX system, IT admin can perform management from an intuitive Web interface, saving time and money on the complicated installation process that a traditional ISDN system requires.

Rich features

Robust Communications Features

With Yeastar PBX system, you can enjoy basic calling features such as call recording, IVR, and so on and other advanced features like CRM integration to boost the working efficiency of your staff.

Benefits for your customers

Your potential customers

  • Using legacy PBX System
  • Wishing to get rid of the complicated landline services
  • In demand for future-proof VoIP communications solutions
  • Requires to make business phone calls anywhere at anytime
  • Wants a flexible system to add users and concurrent calls readily

Benefits for your customers

  • Still could keep the legacy devices in use
  • Linkus UC Client for mobile phones and desktops
  • No upfront costs and relatively low calling fees
  • Access to rich phone system features to drive business efficiency
  • Compatibility with mainstream IP phones and worldwide SIP providers
  • Ability to unite dispersed locations and teleworkers
Benefits for your customers

Interested in Yeastar solution to help you migrate from ISDN to VoIP? Contact us and we’ll plan everything for you.

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Find resources that are related to this ISDN Switch off solution.

Success Story Success Story

Harrow Mencap Moves into All-IP Era with Yeastar S-Series PBX

See How   →
ISDN Switch Off Solution Blog

ISDN Switch Off – What the Future Holds for Your Business

Read the Blog  →

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Contact us today to get more information!