In the FreePBX docs, I came across info regarding keeping RTP ports within a certain range otherwise it can lead to call quality issues. This is the only reference I found in the internet that says RTP port range can cause quality issues. Does anyone know why? I’ve copied and pasted the paragraph below:
“A range of 10000 ports available for RTP Media is often unnecessarily large for most small systems, because one call requires only 4 active ports. Thus, you might consider narrowing the range of ports used for RTP Media. If you do narrow the range, keep the range somewhere within 10000 to 20000 (i.e. don’t select 43500 to 44500), as going outside this range can lead to call quality issues.”
Any insight you can provide would be great.