How to configure/provision phones in a subnetted network?

[greychain]

I like the auto provisioning feature of 3CX but wish it was a bit more usable for a network with multiple subnets.

So if I have a customer that has a network at his office and the 3CX server is on 192.168.1.10 and he has phones on 192.168.2.0 and 192.168.3.0 how do I get the phones to autoconfigure?

Using DHCP option 66? Not always available as an option.

Can I deploy an SBC on each segment of the network? Will this cause any problems?

If I have a remote site for this setup and am using SBC on the remote site and this site is also using multiple subnets can I install an SBC on each segment?

Also if the DHCP 66 option is available on the remote network, where would I point it? The 3CX server or the local SBC?

 

[Saqqara]

Local network - Use option 66, it always points to the 3CX server - https://www.3cx.com/sip-phones/dhcp-option-66/

Remote sites - you can install as many SBC on remote sites as you want, you just select the SBC to use in the management console for the extension.

 

[greychain]

Use option 66, it always points to the 3CX server - https://www.3cx.com/sip-phones/dhcp-option-66/

" Please note that not all DHCP servers have the capability to add/change the scope option. Normally, build in DHCP servers in Firewalls/Routers do not have this function. If the Microsoft DHCP server is used, the option can be set by opening the DHCP Console. (“Administrative tools” > “DHCP”). An alternative DHCP server of your choice could be used to accomplish this task. The following guide is based on the Microsoft DHCP server. Tree options can be used: "

I don't want to get into managing DHCP servers if I can avoid it

 

[Saqqara]

We have firewall, routers that have the option to add extra functions to the dhcp.

If the device does not allow this, then you will have to manually add the provisioning link into the phone web gui

 

[greychain]

" Remote sites - you can install as many SBC on remote sites as you want, you just select the SBC to use in the management console for the extension. "

That solves the problem of why it wasn't provisioning from my other SBC
Thanks for that

 

[AWS2P]

each phone is set with static SBC IP so even if you have 2 on same site no chance phones come to the second if the first one is no more available.

Otherwise you need to use HA SBC