Business Need

Redundancy Solution

Provide high system availability and help prevent unnecessary business loss caused by unexpected server failure

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Compatible IP Phones

High business continuity is significant to all business.

In today’s competitive market, high business continuity and instant communication is significant to all business. Imaging that your telephony system goes down without any signs, or your investor just called you several times for vital decision in urgent, but could not get you, then how much loss will this cost?

The bundle of two Yeastar S-Series VoIP PBXs or Yeastar K2 IP PBXs is optimized for use as a failover system, called Hot Standby solution, or Redundancy solution, which can perfectly handle the situation above.



Failover System

And all data of the primary server is mirrored to the secondary in real time. When the primary server goes down, the secondary will immediately take over, replacing the primary server.


Enhanced Service Reliability

This reliable function delivers peace of mind so you can fully depend on your phone system to function with zero or minimal downtime.


Lowered Risk

This fast disaster recovery solution reduces your exposure to risks and protects you from unexpected cyber-attacks or hardware damage that can significantly impact your bottom line.


Automatic and Instant

The secondary server will automatically and instantly take over and keep your phone system operate as normal once the primary server goes down.


Timely Notification

You could receive a failover notification when the on-site PBX is down. S-Series VoIP PBX and K2 IP PBX support email, call and SMS notification.



The Hot Standby solution is a redundant method in which one server runs simultaneously with an identical primary server. The two servers in the failover pair must meet the following requirements:

  • Same model
  • Same firmware version
  • Same expansion boards and modules installed in the same slots
  • Same software configurations


  • The downtime was kept to an absolute minimum to ensure the normal operation of all the functions of your telephony system.
  • Callers still reach the people they need and business can continue as usual.
  • You will never have to worry about the unnecessary business loss caused by unexpected server failure anymore.


Find resources that are related to this solution.

business continuity Blog

Prepared for Any Emergency: How Yeastar Helps Your Business Continuity

See How   →
config-guide-resource Guide

How to Configure Hot Standby Feature of Yeastar S-Series VoIP PBX [Video]

Learn How  →
config-guide-resource Guide

How to Configure Hot Standby Feature of Yeastar K2 IP PBX

Learn More  →

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