Can I have 2 SBCs for one system?

[dandenson]

Long story short, I had a customer replace a router and I couldn't get 8 yealinks to register at the same time. SIP ALG off, all the usual tricks failed. So I spun up an SBC on an old machine and got everything registered through the SBC. I'm going to replace this with a raspberry pi SBC.

I'm not sure of the mechanics here. When I configure an SBC, does that just become a generic path for calls? ie, when I set a phone to provision through an SBC the only think 'locking' it to that particular one is provisioning setting the sip proxy? If I were to manually change the proxy ip on the phone to a second SBC that should basically just work?

I'm hoping I can drop the replacement in and all I have to do is update the SBC address in provisioning and the phone will update. I don't want to take the site down. Already had this NAT nightmare and don't want the customer feeling any more issues.

 

[eddv123]

The SBC will create a tunnel back to 3CX so you can provision/register phones etc.

You can have multiple SBC's per remote site to bolster your numbers however if you want to assign phones then you would probably be best to split between 2 sets of ranges or something like that.

 

[YiannisH_3CX]

Hello @dandenson

As i understand it you want to replace the SBC without resetting re-provisioning the phones to the new SBC. If that is the case then i would recommend setting the new SBC up with the same IP address of the old SBC so no additional configuration is required.