Thanks for your response. I have uploaded the file and also manually checked the settings - they all look ok.
I modified the Phone Port DigitMap, OutboundCallRoute and PrimaryLine to force the Phone Port to connect to the PSTN line and cut out FreePBX from the call. The result is the echo is a lot better - you can still detect it but only just. When I route the Phone to FreePBX and out again on the Line then the echo gets a lot worse.
So it's obviously partly FreePBX causing the problem. Do you have any ideas what could be causing the issue on FreePBX - it's running on a Raspberry PI 3 and the load average is 0.00 so it really shouldn't be having issues.
I strongly suggest that you try and fix any echo that occurs on the OBi110 first, no matter how little it is. Only then would I recommend tweaking FreePBX! So get that phone plugged back into the OBi110 phone port and make some calls via your PSTN line.
I understand from your OP that you have tried reducing ChannelTxGain down to -7, but try the following again...
Look in Line Port > Port Settings you will find these two parameters:
Gain in dB (-15 to 15) to apply to the signal transmit from the OBi to the PSTN company
Gain in dB (-15 to 15) to apply to the signal received by the OBi from the PSTN company
Adjust these again carefully - a change of 3dB upwards or downwards will double or halve the perceived volume.
There are also two similar settings in the Phone Port that allow you to adjust the volume sent to and from the telephone plugged into your OBi110. However, if the volume to and from your SIP callers seems ok, then it is most likely that the adjustment is needed on the Line Port if only PSTN calls are having issues.
Adjusting these settings and testing takes both time and patience, give it a go and see if you can eliminate that echo on the OBi110 completely.
Finally, if the OBi is connected to a 100Mbit port, force it to use 100Mbit Full duplex:
- Dial * * * 0
- Enter option 27 and press #
- Press 1 to set a new value
- Enter a value of 1
- Press 1 to confirm/save
- Hang up
This should make the network transaction from/to OBi better.
Why have an emoji for faecal matter only for it to get "bleeped" out?
Thanks for letting me know about the
emoji being censored out!
With other a 1,000 emoji to choose from there was bound to be an issue or two, you should now be able to use it.