Please

I called my office number. I hear my partner voice but he cant hear my voice.

why ?

Please give us more info. What FreePBX versions. What type of trunking. Sounds like you are using a SIP trunk so it is probably a firewall configuration. Do you have the correct ports forwarded to your system?

The mostly likely answer is that you haven’t correctly configured the NAT settings at the top of the Asterisk SIP Settings module. Try NAT = No, and set your external and internal IP addresses. If that doesn’t work, try NAT = Yes.

You may also need to forward UDP Ports 10000 to 20000 from your router to your PBX

FreePBX version = 2.8.1.4 trunk type = SIP TRUNK

my trunk is:
PEER Details

type=peer
qualify=no
port=5060
host=192.168.1.201
dtmfmode=rfc2833
context=from-trunk
allow=all

USER Details

type=user
nat=never
host=192.168.1.201
dtmfmode=rfc2833
context=from-trunk
canreinvite=no

I wait for your solutions…

USER Details

type=user
nat=yes
host=192.168.1.201
dtmfmode=rfc2833
context=from-trunk
canreinvite=no

“Tools” > “Asterisk SIP settings”

set “NAT” to Yes
set “IP Configuration” to Static or Dynamic IP (this option needs dyndns.org dynamic host)
set “Local Networks” to 192.168.1.0/255.255.255.0

Configure your router to forward UDP Ports: 5060 and from 10000 to 20000 to your PBX IP address.