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VoIP Phones - Yealink

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Phones and Versions Tested

Model Version Notes
T20P Supports LLD

Feature Notes
Supports 302 Redirect ?
Tested on FireBrick SIP Server Yes
IPv6 Support No

  • Set DTMF Type = RFC2833 if you have problems with DTMF.

Firewall & Security

  • You will also want to set up firewall rules, as per the VoIP Firewall page.
  • Also see the VoIP Security page for information about securing your VoIP service.