In a distributed Network or Multi-branch office you have traditionally had to rely on a continuous and 100% fault tolerant Network connection between sites, or your whole communications Network would fail. This is often out of your control as these types of links are usually provided by an external third party (examples are SDSL or Leased lines). 

The IPECS combats this problems in a very unique way. As well as being able to install Gateways in branch offices or remote locations you can also install Call Servers in those locations that act as local 'active-standby' units (excluding the IPECS MFIM-50). These Call Servers act as slaves to a master Call Server which is centrally located. In the event of the Network link failing the local Call Server takes over control of the branch office instantly and automatically, and any locally made calls continue uninturrupted.

The Call Servers then continue to monitor the Network (WAN) connectivity and as soon as the connection is re-established the local Call Server transfers control back to the Master.  

The IPECS MFIM-600 is the largest Call Server available in the Range and offers true system redundancy. If you deploy a redundant system (a secondary MFIM-600) within your Network and your main Call Server fails then the secondary system takes complete control of the entire Platform instantly and automatically. If the Call Server or power supply fails the secondary Call Server takes control without any calls being lost, on-going conversations are not afftected - your users will not even notice. 

This 'active standby' redundancy allows you complete peace of mind for critical applications such as emergency service provision or real-time stock or bond trading rooms. 

A very simple example of system redundancy would be a single 'Master' site (the Main Network below) and a second 'Slave' site (the Branch Office below). The Red dotted line shows the system in normal operation, with the Central Call Server controlling both sites. In the event of a Network link failure the Active Standby Call Server takes control of the branch office and the system automatically splits into two separate systems (the grey dotted boxes). 

Traditional telephony systems, and many IP systems are unable to automatically split the network and allocate control like this, making the IPECS an ideal candidate where you require high levels of resilience.

 The IPECS is truly distributed and is not constrained by geographic boundaries, learn more about its distributed architecture.