Solved Fully automated provisioning of IP Phones - Zero Touch

[Harjeet]

Hi Guys
we are looking to do our very first 3CX install for a small hotel.
there will be 6 phones (we can get yealink T41).

what we want is full automated management of phones. like we want to assign each phone and extension and provision it , which i can do easily as remote/stun and provision a phone. but if someone factory resets a phone , it should then automatically re-provision and assign same extension without anyone doing anything.

so far with my testing if I remote/stun provision a yealink/fanvill phone and factory reset then phone it comes online but on phone it asks for EXTno and Password (vmPIN) .which is something we don't want it to do. it should just automatically be assigned to an extension that it was previously assigned.

is this possible?

Regards
Harry

 

[Alphabetic]

I would suggest you look at putting an SBC on site and setting up DHCP option 66 to auto provision your phones. STUN will require authentication. If you continue down the STUN path you'll need to start messing with port forwarding.

https://www.3cx.com/sip-phones/dhcp-option-66/

 

[JohnS_3CX]

Hi Harry,

For local phones, DHCP Option 66 is the best solution, if the goal to become auto-provisioned upon reset.

For remote phones, you can do the exact same thing, but use an SBC instead as this will make your deployment much easier and will not be reliant upon static IPs and port forwarding.

 

[Harjeet]

Hi Guys ,
I just setup test bed with two fanvil x4 phones, i got SBC setup on raspberry pi4 and I can see phones in pbx phone list. so i assigned phones to extensions., they works fine.
then if I do a factory reset of a phone , it won't auto provision/assign to same extension instead its coming up as NEW on pbx phone list.

i have tried with dhcp option 66 by putting SBC IP for it.

not sure what i am missing here.

 

[Harjeet]

PBX is running on our AWS EC2 instance.

 

[Alphabetic]

Option 66 will need to be the provisioning link under the extension > phone prov page then it will auto provision

https://www.3cx.com/sip-phones/dhcp-option-66/

 

[Saqqara]

i have tried with dhcp option 66 by putting SBC IP for it.

dhcp option 66 needs to be the provisioning link and not the sbc server

https://www.3cx.com/sip-phones/yealink-t4-series/#h.h6ekadsfo11g - Step 3.3 will give the url

 

[Harjeet]

with SBC on the same subnet is it not supposed to auto-provision using PNP without using DHCP option 66 ?
yes it works now with http link in option 66.

so just to confirm with pbx in cloud, for remote phones in office I will always need a SBC and option66 with http link in order to achieve fully automatic provisioning. in that case I believe all phones needs to be same make/model for http link to be same ?

 

[Saqqara]

The provisioning url is unique to the 3CX system and not each model of phone.so it can be used across the range of phones that use dhcp option 66.

 

[Harjeet]

that's great. thanks guys its working as expected

 

[JohnS_3CX]

Great news!