E18 Door Phone Administrator Guide
Parameter Set-up:
UDP Keep Alive Messages: If enabled, the device will send out the
massage to the SIP sever so that SIP sever will recognize that the device
is in on-line status.
UDP Alive Msg Interval: set the message sending time interval from 5-60
seconds, the default is 30 seconds.
RPort: enable the Rport when the SIP server is in WAN (Wide Area
Network).
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