======Hardware - VOIP Phones - Grandstream - GXP2020======


=====Forumposts=====

[[https://community.freepbx.org/t/grandstream-phones-go-offline-from-freepbx-after-registration-timeout-expires/31765|FreePBX Community Forum - Grandstream phones go offline from FreePBX after registration timeout expires]]


=====Notes=====

====Does not support TLS!====

The Grandstream GXP2020 IP phone does not support TLS. \\
Using SIPS is therefore not possible. \\
Even the latest firmware from 2010 does not offer TLS support.

Sources:
  - Personal experience.
  - [[http://forums.grandstream.com/forums/index.php?topic=2557.0|Grandstream Forums - SRTP/TLS]]