3130IF -VoIP User Manual V1.2
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PSTN color ring;
Configure GK backup and enable GK detecting and auto-swap functions ,the
phone will automatically swap to GK backup server when there is no response
from default GK, and test the default GK; if the default GK recovers response,
the phone will automatically swap to the default GK.
Configure GK backup server IP;
Configure server port for GK backup;
Configure ID for GK backup;
GK detection interval time configuration, the unit is second;
Enable the phone's auto-swap to GK;
Configure the phone to detect GK automatically.