I don't dial the numbers you suggest, but have not had any numbers not work. As for byod...I have a sip phone and several soft phones registered, and have had zero issues registering, anytime.

The one way audio issues you mention are often due to you network or router config. I'm not saying you aren't having issues, I'm just saying it must not be a service issue for all, as I have no problems with either the standard server and ata or byod.