The VOIP section filled in and the device registers and goes on line. When dialing out to my mobile, it rings once and goes engaged? Tried various software things like ALG disable but remains. Tried o

Trying to set up VOIP using the two FXS ports. Using the standard set-up in the VOIP section, "others" and it just does not register and go online. Its a straight broadband connection, optic to local