The TLS-5 Telephone Line Simulator offers the most convenient way to demonstrate or test telecom equipment where central office lines are not easily available.

The TLS-5 functions as a virtual CO switch simulator, providing four simulated central office lines with two talk paths, plus an audio interface port, making the TLS-5 a versatile device for applications.

• Features:
• Four loop start lines
• Two talk paths
• Programmable parameters: 
• Primary/secondary telephone numbers up to 16 digits
• Ring cadence (distinctive ringing)
• Off-hook modes
• Network response time delays
• Test tone frequency and cadence
• Eight selectable ring waveforms
• Line attenuation
• Forced disconnect
• Dial up test tones
• Hot line ringdown - Automatically rings another station(s) when the handset is lifted.
• Precise call progress tones:
• Dial tone
• Busy signal
• Reorder tone
• Ringback
• Programmable call processing delays
• Selectable response to non-valid numbers
• PBX operations: 
• Call transfer
• Call hold
• Conference calling
• Hunt group operation
• "9" access to outside line
• Forced disconnect - Disconnects either the caller or called party after a programmable delay.
• Audio port - Standard 5-pin DIN jack for recording or playing voice or tones.
• Caller ID: 
• Bellcore single and multiple data message formats
• Type I (SDMF/MDMF)
• Type II (SCWID/CIDCW)
• Visual message waiting
• Programmable names (CID)
• Privacy blockage
• Out-of-area calls
• Transmission errors
• Calling number
• Caller nameDate and time of call