Teltone TLS-4A

The TLS-4A Telephone Line Simulator offers a convenient means for setting up temporary “telephone lines” to demonstrate or test equipment where actual central office lines are not easily available. The TLS-4A provides four simulated lines, two “talk paths” or connections, and an audio interface port, making it a versatile device for a variety of applications including:

• Demonstrating or testing telecommunications devices such as telephone sets, fax machines, and modems. Two simultaneous, independent conversations can be set up over the four lines.

• Playing prerecorded presentations over a line when the telephone handset is lifted (for example, at trade show or museum displays)

• As a teaching aid with the audio port configured to allow monitoring and/or recording of a telephone conversation (for example, when teaching children to use “9-1-1”)

• Testing telephone or key system installations

• Limited testing of loop start PBX installations

Features

• Programmable operations:

• Two phone numbers for each line
• Forced disconnect
• Hot line (“ringdown”) number
• Ring cadence 1-3 rings
• Hunt groups
• Immediate or dial access to audio port
• Tone or recorded message when an invalid number is dialed
• Monitor mode (allows recording phone calls for training use)
• PBX-like operations: call transfer, add on, hook flash
• Timing adjustments —Second dial tone simulates outside line access
• Tone following disconnect 

• Provides four lines and two connections

• Portability and quick, convenient setup

• Accepts tone and rotary input

• Ringing voltage source with short circuit protection

• AC powered (battery not required)

• Non-volatile memory (battery not required)

• Generates precise call progress tones

• Ground reference jack

• -48 V ground referenced line voltage

• Audio port