Avaya 400EC R3.1 Expansion Module (caller ID) 1 Year Warranty -Refurb

Avaya 400EC R3.1 Expansion Module (caller ID) 1 Year Warranty -Refurb

• Adds 4 lines and no extensions to your Partner Plus Release 3.0 or greater and all Partner II and Partner ACS Releases.
• Adds support for Caller ID information on display telephones.