We have wall-mounted (analog) phones in each classroom (I work in a school) meant for emergency calls.
In one room (let's say room X), there is no dial tone.
If I lift the phone in that room off the wall plate and place it on the wall plate in one of the adjoining rooms, it works (dial tone is audible).
If I take the phones from one of the other rooms (that work in those rooms - i.e. have dial tone) and place them on the wall plate in room X, no dial tone.
I've done this over and over again and the result is consistent.
So, I took our toner probe and compared connections.
In the rooms where there is a dial tone, the tone at the punch down block is strong (loud).
The tone from the line going to room X is audible but weak.
I assume there is some connectivity, but not very good, not good enough to obtain a dial tone.
It looks like it must be the line because neither the wall plate or the punched down wires look damaged or put of place.
What can I do next?
In one room (let's say room X), there is no dial tone.
If I lift the phone in that room off the wall plate and place it on the wall plate in one of the adjoining rooms, it works (dial tone is audible).
If I take the phones from one of the other rooms (that work in those rooms - i.e. have dial tone) and place them on the wall plate in room X, no dial tone.
I've done this over and over again and the result is consistent.
So, I took our toner probe and compared connections.
In the rooms where there is a dial tone, the tone at the punch down block is strong (loud).
The tone from the line going to room X is audible but weak.
I assume there is some connectivity, but not very good, not good enough to obtain a dial tone.
It looks like it must be the line because neither the wall plate or the punched down wires look damaged or put of place.
What can I do next?