Sonifex CM-TLL Line Powered Telephone Line Listen Unit

The CM-TLL provides a low-loss interface to receive audio from a telephone line. The line-powered unit is compatible with all analogue direct exchange lines and includes an LED indication of incoming calls. The unit is intended to be used with an earpiece amplifier to receive an audio feed by telephone from a studio.

Key Features

• Audio interface to direct analogue exchange lines - receive calls with electrical isolation from the line
• Line powered, requiring no battery or external power
• LEDs indicating ‘Ring’ and ‘On Hold’ conditions
• Loop-through line sockets provide in-line connection with existing telephone
• Existing telephone remains connected when the unit is in use
• Line connections to British or International sockets via supplied cable kit
• Connection to the telephone set is maintained while the unit is in use
• Small, rugged extruded aluminium case with XLR3 male 4-wire connector

Technical Specifications

4-Wire Output
Output Impedance
150ohms, transformer coupled
Output Connector
3 pin XLR male connector
Output Level
Typically 0dBU for average line level
2-Wire
Off Hook Voltage
6V minimum
2 Wire Connectors
RJ11 socket - line
RJ11 socket handset
Front Panel Operational Controls
Line Connect
Push button with indicator
Ring LED
Indicates incoming ringing
On LED
Indicates connection to the telephone line
Equipment Type
CM-TLL Line powered telephone line listen unit
Physical
Dimensions
77mm (W) x 83mm (D) x 42mm (H)
3.0” (W) x 3.3” (D) x 1.7” (H)
Weight
Nett: 0.20kg Gross: 0.70kg
Nett: 0.50lbs Gross: 1.6lbs