Features: Digital flash memory design Retains music/message content even during power loss...unit ships with preloaded audio. Integrated CD mechanism Quickly and easily record high quality audio. CD media is easy and inexpensive to duplicate and distribute. CD Autoload Drop in a CD with a single track, close the lid, and the unit automatically records the content. Multi-Track Programmable Drop in a multi-track CD and choose which tracks and in what order to record. Up to 32 minutes of recording capacity The OHP 5000 ships with 8 minutes of digital flash memory that is easily upgrade to 16, 24 or 32 minutes. LCD Control Panel Displays program length, time remaining in unit's memory, and unit's status. Trigger switch Unit can be triggered to start program content from the beginning with an external trigger switch. Analog Phone Capability (OHP 5500 only) Adds true "hold button" hold music activation to standard analog and KSU-less telephones with up to 4 lines and 50 station sets. Works with all types of phones...even cordless. CustomWorks CD-ROM software Includes easy-to-use software for creating a custom on-hold audio script. Runs on Mac or PC. HoldTracks Audio CD Choose new, royalty-free music from a prerecorded audio CD featuring a variety of music styles. MessageStudio Software Compatible Works with award-winning MessageStudio software (available separately) which allows user to create new on-hold audio content on their PC and record directly into OHP 5000's digital memory. External Recording Capability Audio input allows you to record from any external audio source. Built-In Monitor Speaker Allows user to monitor sound with the flip of a switch. Wall Mountable Unit can be mounted, played and recorded in a vertical position. 3-year manufacturer's warranty