some inconsistencies

despite Support: At night, the display did not turn off, solved since new firmware
for I now see only one on the 2 activated and the ISDN Config had to be made partially renewed
if the AB displays the phone number, the caller can not anwaählen directly but must cumbersome record or store the number and redial
laggy operation (allocation keys labeling functions)
Many features of the device lacks an alphabetic keyboard
many functions very well: voice quality, software, display the caller from Internet phone books, connect the handsets, ISDN wizard for setting up