Power supplies

1. A power supply comprising:

means for converting AC power received by a power input means to DC power outputted by a power output means;

a ground terminal;

means for receiving and transmitting a telecommunications signal from/to at least one telecommunications device; and

means for protecting the telecommunications device and for protecting the power supply from a surge by shunting the surge to the ground terminal;

wherein the means for protecting the telecommunications device comprises a first fuse connected in a receive/transmit path in the means for receiving and transmitting; and

wherein the means for protecting the power supply comprises a second fuse coupled upstream of the first fuse and the ground terminal and coupled to the AC power to DC power converting means.

2. The power supply of claim 1 , wherein the means for receiving and transmitting comprises a first telecommunications connector and a second telecommunications connector coupled communicatively to form a receive/transmit path.

3. The power supply of claim 2 , wherein the first fuse is configured to route the telecommunications signal between the first telecommunications connector and the second telecommunications connector when a threshold has not been exceeded; and

wherein the first fuse is configured to route the telecommunications signal to the ground terminal when a threshold has been exceeded.

4. The power supply of claim 1 , wherein the second fuse is configured to prevent the surge from passing therethrough, and thus to ensure it routes to ground.

5. The power supply of claim 1 , wherein the first fuse is a tripolar gasfuse.

6. The power supply of claim 5 , wherein the second fuse is a tripolar gasfuse or a bipolar gasfuse.

7. The power supply of claim 6 , wherein the first and second telecommunications connectors are physical sockets.

8. The power supply of claim 2 , wherein the first and second telecommunications connectors each comprise an Asymmetric Digital Subscriber Line (ADSL) socket.

9. The power supply of claim 1 , wherein the power supply further comprises a power input means and a power output means.

10. The power supply of claim 9 , wherein the power supply further comprises at least three varistors coupled between the power input means and the ground terminal.

11. The power supply of claim 10 , wherein the power input means comprises a live terminal and a neutral terminal, and a varistor is connected between each of the live and neutral terminals and a node, and between the node and the ground terminal.

12. The power supply of claim 10 , wherein each varistor is coupled to a thermal fuse.