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?

 

[Marconi]

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?

I would disable all IPv6 settings (specifically those in 3CX) and use an SBC locally to connect to the PBX through a secure tunnel.