- Telematrix single line PABX patible telephone- Line Powered - no AC adaptor required- Compatible with PABX telephone lines- Large rachetable index card stand- Convenient data port- Industrial grade construction with matte finish design- Non-Slip base- Desk or wall mountable- Large message waiting lamp- Push On/Off handset volume Boost 15dB Auto-reset- High/Low/Off ringer volume control adjustment- Flash key - 600mS timing- Hold key with LED indication and remote release- Last number redial key- Disconnect (new call) key- FCC Part 68 FCC Part 15 & UL 1459 Ref. ADA/FCC Hearing Aid Compliant- Black