Teltone’s TLS-3B phone line simulator makes it easy to test or demonstrate equipment that connects to the North American telephone network (POTS), without requiring a live central office connection. Everything you need is in a compact, portable, AC-powered unit.

Accurate, Programmable Central Office Simulator

Like a miniature central office or PBX, the TLS-3B provides accurate dial tone, audible ring, and busy signals to the telephones or other devices connected to it. Many functions of the TLS-3B are easily programmed with a touchtone phone, including phone numbers, off-hook modes, signal delays, test tone frequencies, and line attenuation. The TLS-3B also provides Caller Identification information to both lines, and provides a Visual Message Waiting indicator.

The Solution for Telecom Testing and Demonstration

The TLS-3B makes it easy to perform basic testing or demonstration of telecommunications equipment such as telephones, modems, faxes, caller ID equipment, key systems and PBX installations. Its small size and light weight make the the unit ideal for trade shows and sales presentations.

If you are looking for more features like PBX operations and additional phone lines, see the information on the TLS-5.

Why Buy a Teltone Phone Line Simulator?

Teltone's reputation for quality has been built over 30 years of experience developing and manufacturing telephony products sold to major network providers and businesses worldwide. Teltone's name is synonymous with phone line simulators, having led the category since the beginning. Go with the original. Get a genuine Teltone.

Product Research Assistance

Use our Simulator/Emulator Application Guide to find out which product is the best fit for you.

Comparison Table

If you are not sure which Teltone simulator is right for you, check out our comparison table.