Have the phone for our VoIP system 921V Telekom acquired, good voice quality, easy setup, good for the price range of services. But the batteries are supplied with our equipment deficient - term standby in 5 hours talk time less than 1 hour. Have batteries replaced by Amazon AAA batteries, now everything is impeccable. For a good device therefore only 4 stars.
Addendum: After nearly two months in operation, I regret the vote demote. It takes now felt an eternity until the data of the address book are displayed every third call can not be completed (device locks up) and just close to the router a connection is established. All in all just two points - I would not buy it.
