Make sure your headset is subscribed to the base by placing it in the charging cradle
Adjust the configuration switch (F-A) on the back of the base until a dial tone is heard. The default A works for most phones
Attention: Use configuration D for Cisco phones. Cisco phones connected with EHS cable use configuration A
Make sure your desk phone is connected correctly to your base
If your base is connected to your desk phone's dedicated headset port, press the headset button to hear a dial tone
If your base is connected to your desk phone's dedicated headset port, press the desk phone's headset button and the base's desk phone button to hear a dial tone
If your base is connected to your handset port, manually remove the handset to hear a dial tone (if you do not have an EHS cable or HL10 lifter)
Make sure your HL10 lifter is lifting the handset high enough to operate the hookswitch; set it to a higher setting if necessary
Adjust the headset's listening volume
If the volume is still too low, adjust the desk phone listening volume on the base
