We specialize in used & refurbished business phones for existing phone systems

Avaya 5420 Phone

PLEASE NOTE: All business telephones listed on this web site will operate only if connected to the appropriate phone system. They will not function as a stand-alone telephone.

12803 12805
Manufacturers: Avaya , AT&T/LUCENT/AVAYA
Availability: Out of stock

Avaya 5420 Telephone - The Avaya 5420 is a multi-line digital phone that runs off of the Avaya IP Office system. 

Please specify the revision of the phone you are using in the additional comments section when placing an order to ensure the phone(s) you get are compatible with what you are using. 

  • Model 5420 Large Display
  • 700339823 Phone Model
  • 700381627 Phone Model
  • 7 line, 29 character Large display to show users, eliminating the need for paper labels
  • 24 buttons total
  • 8 Ring Patterns
  • Headset and Hearing Aid Compatible 
  • Must be connected to an Avaya IP Office Phone System 
  • Refurbished, comes with handset, new line cords, new handset cord, and stand
Double check compatibility:
If running an IP Office system, you must have a DS Port available on IP small office Release 3.0 or higher.
If running it on Avaya IP Office 7.0- IP500 you must run it in full IP mode, not quick mode.
If running it on Avaya IP Office 8.0 - IP500 it must be running on Essential Edition  

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