What are tcp/udp port numbers of the h323 protocol to be measure for netflow application.
H.225 uses TCP 1718, 1719, 1720.
H.245 uses TCP 11000 to 65535.
H.323 uses UDP 16384-32767.
An inside caller initiates a TCP connection to the client on the outside on port 1720.
The two devices negotiate for a second TCP session, During the second TCP session, the clients negotiate on UDP ports.