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Teltone TLS-4A Reference Manual

Telephone line simulator
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Reference Manual

Chapter 1: Overview

This manual describes the Telephone Line Simulator-4A which tests
telephones and other telecommunications devices.
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:
Static Protection
Use standard precautions in discharging electrostatic buildup before
operating this equipment or any other electrical equipment.
Features
40-400-00033, Rev. A
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
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
Chapter 1: Overview
Page 1

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Summary of Contents for Teltone TLS-4A

  • Page 1: Chapter 1: Overview

    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: •...
  • Page 2 The TLS-4A is a portable unit weighing just over 4 pounds. A detachable power cord is supplied with the TLS-4A. As shown in Figure 1, the front panel provides: four modular RJ-11 jacks for connection of the equipment to be demonstrated or tested, a multifunction switch (see Table 1), and the indicators listed in Table 2.
  • Page 3: Power Off

    POWER ON (Press and release the top portion of the switch.) Bottom POWER OFF LED Operation The table below explains how the LEDs on the TLS-4A front panel operate and what the different blinking patterns indicate. Table 2 LED Indicators Indicator State Description Line 1—Line 4...
  • Page 4 Telephone Line Simulator 4A Chapter 2: Feature Applications The TLS-4A offers an array of programmable features to suit a variety of applications. Two Numbers Per Line Each of the four lines can be assigned two telephone numbers, each number a maximum of 16 digits long.
  • Page 5 Chapter 2: Feature Applications Invalid Number You can program how the TLS-4A will respond to an invalid number. It can respond with busy tone, reorder tone, ringback tone, silence, or it can connect the calling line to the audio port. Regardless of the response you select, there will be a delay before the response is activated.
  • Page 6 Telephone Line Simulator 4A Uses for Hunt Mode Hunt Mode, command 35, can be used to Simulate Trunk Groups/Telethons. Please see Chapter 6 for a detailed explanation of this command. Ring First/Ring Next/Ring All When Hunt mode is set to “ring first available”, “ring all”, or “ring next” with multiple lines set to the same phone number, it simulates a group of lines with a single pilot number (like the trunks into a PBX system).
  • Page 7: Chapter 8: Electrical Specifications

    AC Power Input TLS-4A: 115 VAC 15% Voltage Frequency 49 to 61 Hz Current TLS-4A: 0.2 A maximum (nominal line voltage) Fusing 0.25 A 5 x 20 mm slow blow Unit dissipation 20 Watts maximum Telephone Line Circuit (Loop Start) -48 5 Volts (Tip positive referenced to Ring)
  • Page 8 30 volt-amps maximum Connector pinout Pin 1: relay contact Pin 2: ground Pin 3: relay contact Pin 4: audio in to TLS-4A Pin 5: audio out from TLS-4A Shell ground: ground Mechanical Specifications Dimensions 2.3" H x 8.5" W x 10 .0"...
  • Page 9: Chapter 9: Ordering Information

    Telephone Line Simulator 4A Chapter 9: Ordering Information TLS-4A Telephone Line Simulator with power cord, includes an AC power cord and reference manual (this document). This unit accepts 115 VAC. Optional Components AC110-7.5 (spare) AC power cord, three-pronged, power cord (No.