Specifications
P0992639 01 Modular ICS Companion Installer Guide
Testing
Testing the Companion portable telephones
You must register all portable telephones before testing them. 
For more detail on registering portable telephones, refer to 
Modular ICS Companion System Coordinator Guide and the 
Telephone Registration Instructions.
1. Verify that the portable telephone is ON.
2. Establish a connection to get internal dial tone. If no dial 
tone is present, the portable telephone may not be 
registered. Try to register the portable telephone again.
3. Verify that the portable telephone is using the correct 
registration slot.
4. Verify that the portable telephone can make a call.
5. Verify that the portable telephone has been assigned the 
correct extension number by calling a wired telephone and 
viewing the line number displayed. 
Testing the base stations
1. Verify that the ICS is ON.
2. Verify that re-evaluation is complete.
3. Verify that the base station has been powered up correctly 
by checking that the green light is ON and the red light is 
OFF.
If the red light is flashing, it indicates that one of the 
following problems may exist:
• The base station is not connected to the ICS.
• The base station is faulty and should be replaced.










