An ESI 48-Key Feature Phone is ideal for most active phone users. Its large display and abundant programmable feature keys help you achieve maximum productivity. And, if you need even more programmable keys, it’s easy to connect the optional 60-Key Expansion Console to give you a total of 90 programmable feature keys.

• 48-Key Digital Feature Phone
  Connects to our standard phone systems to provide a level of performance that goes well beyond “standard.”
  Systems: IVX E-Class; IVX S-Class.
  Programmable keys: 30 [90 with optional Expansion Console attached].
  VOICE MAIL key: Yes; dedicated.
  HELP key: Yes; dedicated.
  Display: Three-line, 56-character.
  Speaker: Yes.
  Speakerphone: Yes.
   
• 48-Key [local] IP Feature Phone
  Provides the same great ESI phone capabilities as does the 48-Key Digital Feature Phone, yet with the additional advantage of “one-wire” VoIP (voice over IP) telephony. (For more information on VoIP, see “Why VoIP?”)
  Systems: IVX E-Class[when IP-enabled]; IP E-Class.
  Programmable keys: 30 [90 with optional Expansion Console attached].
  VOICE MAIL key: Yes; dedicated.
  HELP key: Yes; dedicated.
  Display: Three-line, 56-character.
  Speaker: Yes.
  Speakerphone: Yes.
   
• 48-Key Remote IP Feature Phone
  A special version of the IP Feature Phone that works from a broadband-equipped remote location (such as your home or a small satellite office) just as if it were on the regular phone system at your main office. In fact, this one’s so special that we’ve given it a section of its own here on the ESI Web site.
  Systems: IVX E-Class [when IP-enabled]; IP E-Class.
  Programmable keys: 30 [90 with optional Expansion Console attached].
  VOICE MAIL key: Yes; dedicated.
  HELP key: Yes; dedicated.
  Display: Three-line, 56-character.
  Speaker: Yes.
  Speakerphone: Yes.