why doesn't faxing work on my ePMP?

Products ePMP
6

http://community.cambiumnetworks.com/t5/ePMP-1000/Voip-nat-helper-really-don-t-help-in-nat-mode/m-p/37552#U37552

check this ... i have the same problem with voip. Spa112 lose registration and need to reboot for work again ... sip phone same problem...