User Guide

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Door Phone
When there is an incoming call from doorphone, setup the delay auto
answer time, R73G will auto answer the call after the timeout.
Note: if you enable Auto Answer function, this feature will be not
available
Others
Return Code When Refuse: Allows users to assign specific code as
return code to SIP server when an incoming call is rejected.
Auto Answer Delay: To configure delay time before an incoming call is
automatically answered.
Early DTMF: To enable or disable early DTMF.
Multicast Codec : Choose the default audio codec for multicast.
Direct IP : Support direct ip call .