Avaya/Interquartz Gemini CLI 9335-AV Headset Speakerphone. Avaya/Interquartz Gemini CLI 9335-AV Headset Speakerphone with Caller Display. A top class analogue business phone from a highly respected manufacturer. Handsfree, headset capable and PBX compatible with CLI display. Especially recommended for use with the Avaya IP Office and Argent Office range of telephone systems. The Gemini CLI Telephone offers a whole host of benefits to business users and homeworkers including Caller ID, handsfree and headset compatibility, all for a very reasonable price. The Gemini CLI is also ideal for Centrex and Featureline users. As with all Interquartz models, the Gemini CLI is built to the highest standards, using high-impact plastic casing, double-injection moulded buttons and non slip rubber feet. Key Features. Caller ID with 80 memories. Triple standard message waiting (high voltage, reverse polarity & voltage drop Large 3 line LCD display. 100 name and number personal directory . 20 protectable direct access memories. Full handsfree working. Headset port. Data port. ELR. Locking mute with LED. Last number redial with 5 memories .