36Configure
the provisioning server•SIP_PING YES | NO The SIPPING configuration value is used to maintain server heartbeat detection and to keep a firewall pinhole open.
When used for server heartbeat detection, the IP Phone 1140E
periodically pings the SIP Proxy and awaits a response. When three attempts
to ping the SIP Proxy fail, the IP Phone E begins a failover process and attempts to connect to the next configured SIP Proxy IP in the same domain.
When a NAT TRAVERSAL method is selected, the SIP_PING
configuration value also helps keep a firewall pinhole open.
ATTENTIONDecide carefully whether SIPPING usage is appropriate for your environment. Even when SIPPING
is not used for NAT TRAVERSAL, it is highly likely that you must keep SIPPING enabled for server heartbeat detection.
If the IP Phone E is behind a firewall, it is very likely that
you must keep SIPPING enabled, unless an alternate method of keeping the firewall pinhole open is used.
The default value is yes if not specified in the device configuration file.
If SIPPING is changed in the Device configuration file,
the IP Phone1140E must be rebooted for the change to take effect
YES -
enables pinging NO - disables pinging
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