Whole bunch of office phones. No way to test....

you should be able to get a user's manual from the manufacturer website


I had some older ones like the ones in your pictures which worked as an analog telephone(no power required) but also had lots of functions such as saved numbers, speed dial, etc which only worked when the power supply was plugged it. Are you sure you've used the right plug? Some are two lines, some are only one line, with two plugs, for transiting the line through to a fax

Originally Posted by Bear

you should be able to get a user's manual from the manufacturer website


I had some older ones like the ones in your pictures which worked as an analog telephone(no power required) but also had lots of functions such as saved numbers, speed dial, etc which only worked when the power supply was plugged it. Are you sure you've used the right plug? Some are two lines, some are only one line, with two plugs, for transiting the line through to a fax

Users manuals don't provide much info on hooking them up. These only have two jacks. One for a handset and one for a line in. No power supplies came with them nor do they have a plug for a power cord. They are Samsung iDSC 28D and 8D.

The ones at work will work without the power cord as well.