Cortelco ITT-1211 Corded Single-Line Powered Telephone with Caller ID

The Cortelco ITT-1211 121100TP227S S-L Line Power CID Telephone is a single-line corded business telephone that operates using only telephone line power

It features caller ID and call waiting functionality, a mute with indicator, and a 2.5 mm headset jack.

Flash (100/300/600 mSec)
Hold with Indicator
Redial
Pause
Mute with Indicator
Desk/Wall Mountable
2.5 mm Headset Jack
Speakerphone
Caller ID/Call Waiting (Memory for 50 Calls)
Wide Angel, Adjustable LCD
Voice Mail Indication (FSK/Stutter/90V/24V)
On Hook Pre-dial
Directory Button (Save up to 99 Names & Numbers)
Five One-Touch/15 Two-Touch Speed Dial
Programmable Flash Time (100/120/300/600 mSec)
Handset Receive Volume Control (8 Levels)
Programmable Ring Cadence (5 Positions)
Programmable Ring Volume (4 Levels/Off)
Data Port
Headset Button, Release Button
7-10-11 Button
Contrast Button
Three Languages English/French/Spanish)
Programmable Area Code
Programmable LDS Code
Programmable PBX Access Code
Programmable VIP Alert
Clock
Call Timer