- Interfaces in place of a Panasonic KX-T30865 or KX-T7775 doorphone- Allows use of these Viking entry phones:- E-10A Flush mount speaker phone- E-20B Surface mount speaker phone- E-30 Stainless steel speaker phone- E-32 Stainless steel double gang box mount- E-35 Stainless steel video speaker phone- E-40 Compact door entry phone- E-50 Compact video door entry phone- E-60 Double gang entry phone- E-65 Double gang video entry phone- E-70 Double gang entry phone with built in prox card reader- E-75 Double gan