Sonics SS-2380 HS is a Desk cum wall mountable caller ID telephone best for CALL CENTERS. This caller ID telephone is with 50 Phone Book memory, 2 way HANDS FREE communication . Large LCD Display with 16 digits, 4 step LCD adjustable contrast. Display of Incoming numbers, new calls, total calls. Review of Incoming calls & Missed calls. FEATURES :50 Incoming calls memories. Missed call & received Call identification. 20 outgoing calls records, incoming memory or Outgoing Memory can transfer to one or two touch memory. 10 One touch memory & 10 Two-Touch memory buttons for speed dialing. Flash & redial function. Ringer volume adjustable up to 2 levels. Tone/ pulse set through program. Music on Hold . The display also shows the date and time.