User ManualTable of ContentsSoftware License Agreement3Introduction7Phone Features7Requirements8About This Guide8Phone Parts9Optional Accessories for 6739i (Not Included)9Key Panel10Key Descriptions11Installation and Setup13Direct or Shared Network Connection13Direct Network Connection13Shared Network Connection14Connecting to the Network and to Power15Inline Power Provided15Inline Power Not Provided16Connecting a Handset, Headset, or DHSG Headset17Handset17Headset (Optional)17DHSG Headset (Optional)17Desk or Wall Installation19Install on the Desk19Install on the Wall20Customizing your phone22Other Phone Features22Set Audio22Adjusting the Volume23Status Lights (LEDs)23Speaker LED23Message Waiting Indicator (MWI)23Call Timer23Line/Call Appearance Keys24Using a Headset with your Telephone24Making and Receiving Calls using a Headset24Troubleshooting Solutions25Why is the light not coming on with a new Voice Mail Message?25Why is my handset not working?25Why is my speakerphone not working?25Why is my display blank?25Can I turn the backlight for the screen on and off?25Why does the telephone wobble?25Limited Warranty27Size: 5.44 MBPages: 32Language: EnglishOpen manual