My 1812 access plus has dial tone and full voltage on board pins 1,2,4,5 and my bypass 1875 has dial tone on all pins and full voltage but the 1812 will not send dial tone, it appear, to house to call forward on land line and the 1812 will not call forward at keypad. I am thinking board is bad. I have read to replace keypad on the gate module as that needs to function for dial tone. 1812 does double ring house but that is the DK dial tone. 1812 does not recognize commands from house phone. 1812 is in phone mode. Any ideas?
