# To manually connect to the GNSS contact

When you start an RTK survey that uses an Internet or dial-in data link, the Trimble Access software automatically connects to the real-time correction source using the GNSS contact configured in the survey style.

If you start a survey that uses an Internet data link after you have already manually connected to the GNSS contact, then the Trimble Access software uses the already established connection for the survey.

If you experience issues connecting to the real-time correction source, you can manually connect to the GNSS contact to check if there are any issues.

To connect to the GNSS contact at any time

1. Tap and select Settings / Connections. Select the GNSS contacts tab.

2. Select the GNSS contact. It must be configured for an Internet connection. See Internet connection setup.

   If you are using the receiver's Internal modem for the Internet connection and you are connected to the receiver through Bluetooth wireless technology, you must select the receiver in the Bluetooth modem field of the Edit GNSS contacts form.

3. Tap Connect below the GNSS contacts list.

   An Internet connection is established and a check mark appears next to the contact to show that it is in use.

4. To end the Internet connection, select the GNSS contact and then tap Hang up.

To run a test report on the GNSS contact

When there are connection problems or if the GNSS contacts contains incorrect settings, use the Test softkey to troubleshoot.

Only mobile Internet GNSS contacts can be tested.

1. Tap and select Settings / Connections. Select the GNSS contacts tab.
2. Select the GNSS contact entry that you want to test.
3. Tap Edit and then tap Test.
4. The Trimble Accesssoftware tests the settings defined in the GNSS contacts file to make sure that they are correct. If the test fails, a report is generated detailing the problem and suggesting a solution.