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  • Can I use two snom phones for VPN without additional equipment

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Starting with firmware version 8.4.27, all snom firmware versions for all snom phones with the exception of the D120 & D305 include the ability to build secure VoIP-Infrastructures via OpenVPN-Technology.

Snom decided to use OpenVPN because it is compatible with SSL/TLS, RSA Certificates and X509 PKI, NAT, DHCP and TUN/TAP virtual devices.

NOTE: As of 8.7.5.17, the VPN function is no longer part of the firmware but is available as a separate patch on the download page of the respective firmware version.
To be able to use the VPN client on your Snom phone, download the patch here from the Firmware Update Center.


This means that almost every current snom phone could have a built-in VPN client. 

Further information about the configuration can be found here: VPN Support of Snom Phones


Of course, they also need a VPN server.