KVH Industries TracPhone V7-IP User Manual page 92

TracPhone V7-IP User's Guide
Troubleshooting
96
Step 6: Try a Different Phone
Disconnect the phone from the ICM and connect another phone in its
place (use a phone that you know is working properly). If you are then
able to place a call with the new phone, the phone you were using is
faulty.
Step 7: Verify the Phone Is Connected Properly
Make sure your phone is connected to one of the RJ11 "Voice Line"
jacks on the ICM ("Voice Line 1" is the primary jack). If you are not
receiving calls as expected via a virtual number, make sure your
phone is connected to the "Voice Line" jack that is assigned that
virtual number.