knocking or tapping on outgoing calls

I have 2 s23 Ultras and a Pixel 9 Pro XL as well as an LG V30 and s9+.  I have never experienced knocking on any calls on any of my T-Mobile lines regardless of what device they are using.  

I looked at the Apple thread.  It doesn't provide any other really relevant info.  Are any of you running any sort of third party dialer apps or other calling specific apps that might be causing this?  Considering it seems specific to outgoing calls only.  That makes me think it isn't a T-Mobile issue and is something specific running on these devices triggered by outgoing calls only.  Does it happen over WiFi Calling as well?  One of the things that made me look at the Apple thread was to see if it was potentially something specific to the trashy Intel modems.  The Pixel 6 - 8 series are also known for their poor quality modems in areas where coverage isn't great.  The interference suggested in the Apple thread could be a thing when specifically related to band 4/66 because the 1700/2100 split but there isn't enough info being mentioned to really start narrowing down the issue.  

If it was a T-Mobile issue.  I think we would see a lot more people complaining about it.  The same applies to a modem issue between those devices as iPhone's and Pixel's are very popular devices.  There has to be another commonality to help identify the issue.