This was a hard to find manual. When I did find it , some sites wanted way too much for the file.
Owner-manual .com had it for a really reasonable price. Not only that but it was sent very quickly and was a quality scanned document, unlike some others I purchased from a different site.
Good job guys!!
Larry
Text excerpt from page 41 (click to view)
Useful Information
Belt clip (KX-TG2421 only)
You can hang the handset on your belt or pocket using the included belt clip. To attach the belt clip
Headset (optional, KXTG2421 only)
Connecting an optional headset to the handset allows hands-free phone conversations. Please use only a Panasonic headset. See page 5 for compatible headsets and ordering information. To connect an optional headset to the handset
To remove the belt clip While pressing the top of the clip (1), pull the right edge in the direction of the arrow (2).
Headset jack 2 1
L Model shown is KX-TCA86. Note: L To switch to the speakerphone, press {s}. To return to the headset, press {C}. For assistance, please call 1-800-211-PANA (7262).