In highly stressed work spaces to hang a telephone best on the wall. Of course not just any phone but the phone wall FMN B 122plus. Because its compact, closed body fits in size and design to any setting. And on every wall: With only two screws and without opening the phone you attach it wherever you want to phone, desk phones but impractical wären.Technische DatenUmschaltbares (DTMF / pulse dialing, fixed / temporary) Erd-/Flash-Taste flash time adjusted (for the use of network facilities) 16er DTMF touch tone (ABCD keys) Programmable automatic flash in ABCD mode Two programmable line codes (max. 2 digits) Ten Speed ​​Dials (16 digits) Three one-touch memory with three writable keypads mute button Electronic for room inquiry Simple Redial lock for keypad lock and / or programming lock ringer / melody adjustable handset hold Simple wall mounting, without opening the phone but with two screws possibility that TAE connection box under the housing body to install TAE connection string connecting all cables with modular connectors Permanent storage of all settings without battery cover option of numeric and function keys with stick-on screen