May I know the answer with the following question.
1. In Cisco Product, such as voice gateway AS5400, router , should be accept any port range with RTP by default, or only accept a range of port.
According to the book of Cisco VOIP , it's shows the "RTP is generally configured to use UDP ports in range 16384-32767.
Which one is correct?
2. Could be the voice gateway such as AS5400, router which to fix the RTP port number for traverse to remote gateway for transport.