Teleworker one-way audio outbound

[coastaldetox]

Hi all,

I have everything working from the remote side except that the remote phone can hear nothing. I have eliminated the phone as the problem as it is the same with any phone in Teleworker mode. The remote phone can be heard

All necessary ports are forwarded to the 250 and I temporarily disabled the firewall on the remote side as a test but to no avail. SIP ALG and SPI are disabled.

Everything I have read here indicates that the one-way audio is usually failing in the opposite direction so I'm stumped as to where to further troubleshoot this. Wireshark on the phone's local IP and the public IP to the 250 is not showing any dropped packets.

What might I be missing?

[Tech Electronics]

coastaldetox,

Do you have a PEC [Processor Expansion Card] on your system?

If you do you would then need two public IP Addresses or you will get one-way audio on all calls as audio is sent to the PEC first.

Thanks,

TE

[coastaldetox]

No, I don't have a PEC.

[coastaldetox]

To further test this I took the firewall out of the loop on both ends and opened it up for a few calls to allow all traffic in and out of the 250. No luck.

The teleworker phones are not getting any audio at all but internal and external calls from the teleworkers can be heard clearly. I double checked and the phones are set to NAT, not Native.

I have gone through every related post on the forum and all of the other settings necessary are in place. This is not complicated but It's just not working.

My vendor is no longer supporting Mitel and their one Mitel tech is gone.

[DND ON]

It's been years since I programmed one of these, but I seem to remember that NAT will create one-way audio issues. I think it should be set to Native.

[zstray]

Could it be your ALG passthrough on either end is not set correctly?