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46 V85 Desktop VoIP Phone User Guide
YML772 Rev1
In this example, the user configured the V85 to send SIP messages from port 5999 and RTP packets
from port 20000, which are same port numbers configured in NB620W.
Figure D-4
Note: The V85 needs a range UDP ports (RTP base port to RTP base port+6);
the RTP port specified (port 20000) in the V85 is the RTP base port so its
RTP range is 20000 ~ 20006.