28 Quick Start and Reference Guide
• Digital and analog loop-back diagnostics.
• Automatic adaptive equalization.
• Nonvolatile RAM for storage of up to four 35-digit tele-
phone numbers and alternate configurations
• Automatic gain control.
• Inactivity timer (when set, hangs up if no data in pro-
grammable time from 1 to 42 minutes).
• Call progress tone decoding – busy, ring, dial tone.
• Calling tone detection for both fax and data.
• Caller ID support (on some models)
• DTMF decoding for automatic detection of incoming
voice, fax, or data.
• Dual RJ-11 telephone jacks – one for telephone line, one for
optional telephone.
• Telephone cable with RJ-11 connectors.
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