Transfer the call after first talking to the party you are transferring to:

 

  1. Tap the Add Key '+'
  2. Enter the transferee number and tap the blue Call Key…or tap the Contact Key, choose the contact and then tap a phone number for the contact.
  3. When finished talking, tap the More Key '...' and choose Transfer from the list.

 

The Transferring message appears; then Transfer Complete appears. Both calls end on your side.