The SIP-T21P has dual 10/100 network ports and supports IPv6, Open VPN and a redundancy server, and also operates with SRTP/ HTTPS/ TLS, 802.1x. for extended network use.
The integrated PoE allows for easy, flexible and secure installation. The SIP-T21P is designed for business environments with headset compatibility and wall mountable.
With 48 keys, the T28P offers an excellent user experience to configure, make calls, express XML browser, etc.
Moreover, the Yealink T28P supports the security standards TLS, SRTP, HTTPS, 802.1x, Open VPN and AES encryption which are necessary to protect against electronic eavesdropping and data theft.