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Web User Interface


Phone User Interface


Initial Firmware Version

XML Configuration

<tls_session_cache_mode perm="PERMISSIONFLAGS">VALIDVALUE</tls_session_cache_mode>


The valid set inside the OpenSSL the SSL_CTX_set_session_cache_mode.

  • Off: No session caching for client or server takes place.
  • Client: Client sessions are added to the session cache.
  • Server: Server sessions are added to the session cache.
  • Both: Enable both server and client session cache handling.

Valid Values

For all phones except the D120:

  • Off
  • Server
  • Client
  • Both

For the D120 only the values are available:

  • off 
  • Server

Default Value

Both for all phones except the D120. For the D120 it is server.