I pick up the receiver and have no dial tone. I need to make a call
First, make sure you have an Internet connection. If you do have a connection to the Internet, but no dial tone, do a complete power cycle, starting with the modem, router and phone/pc. Power them back in the sequence, modem first, then the router and last the phone/pc, making sure to give the modem some time to reconnect with your internet service provider.
I have an Internet connection and have done a complete power cycle, but I still do not get a dial tone.
Try to determine the IP address of the phone/pc. If it is 0.0.0.0 then it is not communicating with your network. Try to reseat and check the Ethernet cable from the phone/pc to the router. If that does not work try connecting the phone/pc directly to the modem and do a power cycle.