Fiber Optic Telephone Modems
2 Wire, 4 Wire, Mux
Telephone AND Data

If you are looking for a fiber optic telephone modem product, VERSITRON has several options for you. We offer a 4 wire analog trellis option, with new TeleData capabilities, a standard 2 wire telephone modem, an enhanced 2 wire modem which we have dubbed the Teledata Modem, and a phone mux called the Versimux II. The wide variety of cards and chassis of the Versimux II allows for configurations of 4 phone lines, 8 phone lines, or up to 152 phone lines.

You can access a fiber optic telephone design drawing for an example of how these products can be used.

VERSITRON'S 4-Wire fiber optic telephone modems provide full-duplex secure voice communications at distances up to 15 km with fully transparent operation. These modems convert 4 wire analog Trellis (V.32) coded signals ( with data rates to 9.6 Kbps), such as found in STU III equipment. Three versions are available which provide an interface to central office voice grade signals. Models F2722 and F2724 utilize multimode fiber and Model F2725 utilizes singlemode fiber. All models have ST optical connectors and a DB9 electrical interface. In addition any of the models can be used in the VERSITRON FOM II enclosures and chassis.

Our 2 wire telephone modem converts a standard loop start 2 wire telephone circuit to light signals for transmission over fiber optic cable. This modem can also be used as a copper link by utilizing the RJ11 4 wire interface. We offer:

  • RJ45 connector
  • RJ11 connector
  • Distances to 14 km
  • 6 status indicators

The 2 wire telephone modem when used in its enhanced version can also extend a data link ( RS-485 or RS-422) as well as a telephone link. In fact, you can send telephone and/or data signals at the same time using one fiber optic cable! The F270X functions as the exchange side modem while the F271x functions as the subscriber side modem. For intercom or ring down application, the F271x is used at each end of the connection. An RJ11 provides the copper interface for the telephone and/or data input. ST connectors are standard for the fiber optic interface. Several different configurations are offered to accommodate a wide variety of fiber optic needs. The operation of each modem is fully transparent. Distances as follows:

  • 850nm (MM) - 2Km
  • 1300nm (MM) - 8 Km
  • 1300nm (SM) - 14 km

The 2 wire TeleData Modem is now available online in both multimode and singlemode versions.

The Versimux is capable of handling 28 voice or data channels and is designed for local distribution of voice and data in secure and commercial environments at distances up to 15 km. Using time division multiplexing techniques, the Versimux combines data, clock, and control signals for up to 28 channels over a single fiber optic cable. Fully transparent operation assures compatibility with virtually any interface standard to permit quick and economical system expansion. The Versimux is configured to operate in the Model OMC-14 chassis. Up to 14 individual plug-in port cards are used to interface each data or voice channel. Because Versimux operates over fiber optic cable, problems caused by EMI/RFI are eliminated, while assuring security for voice and data signals. The Versimux provides:

  • Elimination of "Channel Hop" and "Sync-Up"
  • Immediate System Status Indication
  • Testing channels in either loop-base or point-to-point modes
  • Audible alarms and status indicators
  • Instantaneous Channel Synchronization

Other Versitron products include MicroModems and FOM II converters for a variety of interfaces including T1, E1, DS3, RS-232, RS-530, RS-485 etc. Lan networking products are also available including Ethernet/Fast Ethernet media converters and ethernet switches with a variety of port and connector options. VERSITRON products are noted for their absolute reliability. With mean time between failure rates of 14+ years and lifetime warranties, VERSITRON stands firmly behind its products. Give us a call at 1-800-537-2296 or 302-894-0699 if you have questions or if we can help you in any way.




Purchase 2-Wire Online
2-Wire TeleData Modem
4-Wire TeleData Modem
Phone Mux

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83 Albe Drive - Suite C - Newark, DE 19702
Need Help? Call 1-800-537-2296, or 302-894-0699 Fax. 302-894-0624