stun yealink t42u - cannot hear between phones in office

[dapdacompx]

using stun provisioning on several yealink t42u phones and the users cannot hear between phones in the same pffice but outside calls are fine.

 

[cobaltit]

You should be using a SBC/SBC phone, but I would confirm 'PBX Delivers Audio' is turned on for each extension.

 

[GeorgeP_3CX]

Hi @dapdacompx,

Please note that STUN provisioning IP phones is not a supported method for provisioning in 3CX Hosted Installations.
The IP phones must be provisioned through an SBC.

https://www.3cx.com/ordering/pricing/hosted-info/