3CX PBX Redundancy

[hivanov]

Hi all !

One of our clients asked on Friday if there is a way develop a solution with two PBXs working in something like "fault tolerance" mode - means the two systems work simultaneous in active and passive state, and when the active PBX fails the passive to become active and continue working. It's about two 256-sim. calls systems running over Windows Server 2008R2.

So, the question is if there is a feature in our PBX to do so or it should be done at lower lever in the OS itself ?

Thanks and best regards,
Hristo

 

[bardissi]

Option 1
You could do this with virtualization.....

OR

Option 2
You could run a script to pull the backup from PBX A and Import to PBX on a schedule (maybe 1 a day???)
And then setup the phones to use a DNS SRV record instead of a IP address.
If the phones cant register to PBX A the SRV Record will point the phones to PBX B.

OR

Option 3
http://www.3cx.com/blog/voip-howto/3cx-high-availability-system-active-active/

 

[hivanov]

Thanks !

I found this article is pretty good with step-by-step guide how to configure the whole system. Do you know if there are another supported IP phones which support the "high availability" feature different from SNOM and YEALINK :?:

Best regards,
Hristo

 

[bardissi]

I'm pretty sure most phones will work with that method.

You would have to test it no matter what equipment your using

 

[hivanov]

I mean not every phone has a field for secondary SIP server address, for example Grandstream phones in our office doesn't

 

[bardissi]

In that case use sip srv record

 

[hivanov]

I'm just starting building test environment with grandstream and cisco ata phones with two v12 PBX installations on Win Server 2012. I'll post later this week to report the results 8|

P.S. If you have some kind of template or sample of the exact SRV records needed, I'll appreciate if you could share it... this will save a lot of my time...


Thanks !!!