Buy used Avaya 8503 ISDN Phones online and gain the following features and benefits from this comprehensive phone system.
Features:
- 3 call appearance (rubber dome) buttons
- 9 fixed feature buttons, 3 with secondary functions
- Includes easy-to-use fixed key features
- 12 one-touch speed dial numbers
System Requirements/Compatibility:
- DEFINITY ECS G2 or G3
- TN556B BRI ISDN line circuit card
- Compatible with "custom" IDSN service from your local phone company
Product shown in Black.