This is the classic Avaya 2500 MMGM #108209016 desktop telephone.
Double gong ringer (hi/low/off)
Adjustable volume handset
Hearing aid compatible
The Avaya Lucent 2500 MMGM comes with a 1 year warranty against manufacturer defect and workmanship.
Global Teck Offers a 30 day satisfaction guarantee on all Avaya Lucent Analog Terminals including the Avaya Lucent 2500 MMGM #108209016.