Vandal-resistant stainless steel wall mount telephone with three automatic dialer pushbuttons. Each push button is programmable from 1-11 digits and phone allows or blocks incoming calls. Equipped with marine quality chrome mechanical hookswitch, instruction or advertising window, ID window, 32" hearing aid compatible armored cord handset with internal steel lanyard, which is anchored into housing for added strength, tamper resistant security screws, and mounting backplate. Equipped for VoIP operation with standard SIP server protocol, requires AC power.
Their impressive size & durability are easy to locate for your toughest security, prison, emergency, and public communication needs.