# If your device can't connect to the Signal server

If you're having trouble connecting your remote device to the Signal application on your computer there are a few things you can check to resolve common problems.

#### Signal Server Application

Verify that the Signal application is running on your computer. Signal works by communicating through this application in order to control your media player. If it is turned off remote devices will not be able to connect.

#### Web Address

When entering a web address into the device's web browser to access Signal verify that the address is entered exactly as it appears in the Signal application window on your computer. Note that the separator between the IP address and the port number of 3569 is a colon and not another dot.

#### Network Connection

Verify that the remote device is on the local wireless network and not the cellular data network. A Wi-Fi icon should be displayed in the device's status bar and not a 3G, EDGE, or other cellular data icon. It's also a good idea to check that the device has joined the correct wireless network:

On an iPhone or iPod touch:

1. From the home screen, tap Settings > Wi-Fi.
2. Verify that a check box is next to the name of the correct wireless network.
3. Tap the blue arrow next to the network name.
4. Compare the IP address displayed with the address shown in the Signal application window on your computer. The first three numbers of the address should be the same.

On a Pocket PC:

1. Tap on the Wi-Fi icon in the status bar.
2. Verify that the name of the correct wireless network is shown in the status balloon.

#### Firewall Software

If you are unable to connect and the items above check out the most likely cause is a software firewall, especially if you are experiencing "server stopped responding" error messages. Verify that any firewall software on your computer is configured to allow Signal access to the network by following the instructions for your computer's operating system:

- Mac OS X 10.5 or later
- Mac OS X 10.4
- Windows 7
- Windows Vista
- Windows XP