said by clueless95129 :
Last Friday suddenly after making a call, we suddenly lost dial tone in our phone. However, we do have a dial tone at the NID and can make phone calls if a phone is connected to it but the moment any internal lines are attached to the phone line, dial tone goes away.
The internal wiring has a weak short. Basic electrical troubleshooting by segmenting the internal wires can be used to locate the short.
If you pay ATT the monthly wiremaster fee, call 611 and schedule a repair call. Otherwise pay someone with basic electrical skills to make the repairs.