voice delay

[tikom]

i hope someone can help me
customer is complaining from voice delay, network is fine
he has 6 EXT
using yealink T43u
local rtp ports are betwenn 14000 and 14099
do i need to open these ports on AWS where i hosted 3cx?
right now these ports are open
UDP 9000 - 10999 source 0.0.0.0/0
UDP 9000 - 10999 source ::/0
do you think this could be the problem?

 

[cobaltit]

Ports not open would be no audio, not delay. It's not like the voice packets go out and say 'oh this port isn't open, let me try another' and that causes the delay

If you are having delay it's either a network issue between the phones and 3CX or 3CX and your dailtone source. Or it could be on the other party's side.

 

[SteveITS]

open all ports needed per the 3CX firewall doc.

That said, I’ve also fought a long delay issue from a client calling one specific number. Got the SIP provider to route the call differently and the problem went away. Check other numbers, and call the number from others on the same SIP provider.