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D-SERIES
WEB USER INTERFACE
Identity -> NAT (Tab) -> Number of initial keep-alives on RTP port
PHONE USER INTERFACE
N/A
FIRMWARE VERSIONS
V8
Starting versions: 8.7.5
XML CONFIGURATION
<initial_rtp_keep_alives idx="INDEX" perm="PERMISSIONFLAG">VALIDVALUE</initial_rtp_keep_alives>
DESCRIPTION
The number of keep-alives the phone should send out at the beginning of an RTP session. A keep-alive is an empty STUN Binding Request and serves to open a pin hole in the firewall. The phone sends one keep-alive by default, i.e. when the setting is empty. This is for backward compatibility. Set this to zero if you want no keep-alives. Note that if the phone receives such a Binding Request, it will answer it with a Binding Response.
This feature is not supported on the snom MP, snom 820, snom 821, and snom 870 telephone models, and the setting has no effect on these phones.
VALIDVALUE
empty; 0 - 256
DEFAULTVALUE
empty
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