Incoming Calls cannot hear me

FreePBX Installation / Upgrade
1

Hey guys,

I am having a weird issue where when someone calls me I can hear them but they cannot hear me. If i call them audio is fine both ways.

the really weird thing is I had everything working in a demo/test setup and the only things that changed were the WAN and LAN IP’s of the server, everything else is the same. I have the builtin firewall disabled and I have the appropriate Firewall rules for SIP and RTP traffic in my Barracuda NG Firewall…

Ive tried searching on the forums but it appears most of the issues i see is the opposite of what i am experiencing.

2

There is a misconfiguration somewhere in Settings, Asterisk SIP Settings.

3

Im not seeing it, External address detects correctly,
local networks is correct,
I have RTP Port ranges 8000-20000 (this matches firewall rule)
everything else is default. I am using ChanSIP

NAT: Yes (ive cycled through all these and no difference)
IP Configuration : Static IP
Override Extern IP : has the same IP as what was detected which is correct
everything else is default

just weird to me that its only on incoming calls. as well as like i said this was fully functional at my Shop and when i put it onsite all that changed were IP’s, all our network equipment/rules for FW are the same (with changes to IP’s of course)

4

I feel like maybe something is hung up from when i had it at my shop.
any suggestions?

I am going back on site to troubleshoot some more.

5

The router at the second site might be to blame, do you have SIP ALG disabled?

6

Sip ALG is not enabled. the routers are same manufacturer the model is different as they are a larger site but run the same OS/FW

we have VoIP working on other systems on site, they have a cloud solution for their staff phones, and a grandstream pbx for their tenant phones. I am trying to replace the grandstream in the equation as i think freePBX will be a better fit but the other systems have been up and running for years now no issue

7

Just a little update
I remade the firewall rules (initially i copy pasted the rules from my local Barracuda to the External, and just made the IP changes on them,so i deleted and manually made) i also restarted the Firewall OS.

on top of that i also ran some updates on the pbx

It appears that after this i was able to hear audio so not 100% sure what fixed it but its working. though it appears DTMF is not working now when it was yesterday but i will battle that issue now.