Sync Async Lease line V23 Modem

4 wire Lease line V23 modem
V23 modulation explained

V.23 modem Analog 4-Wire lease Line Synchronous/Asynchronous Modem

  • V.23 Full duplex 600 or 1200 bps
  • Asynchronous or synchronous RS-232 V.24
  • 4-wire, full duplex line application
  • Standalone and rack mount
  • High stability transmit and receive frequency
  • Ruggedized and full temperature range
  • Fully compatible with V.23 modems
  • DIP switch setting no AT commands

The V.23 modem operates at 600 and 1200 bps, synchronous or synchronous, with V.23 modulation. It accepts external transmit clock on pin 24 of the DTE connector or generates internal clock. It is now available in a full 13.5" PC ISA card, 7.25" half card size, and standalone configuration. The pc card uses the internal PC ISA bus only for power from the pc bus. The phone line connector is an RJ-11 for 4-wire leased line operation. Standard leased line wiring with transmit is on positions 2 and 3, receive 1 and 4 of the 4 position RJ-11 connector.

The modem has a push/push switch for local digital loop on or off. The DIP switch is located on the PC card and is accessible behind the front panel of the standalone modem. The loop-back switch is located on the rear of the unit, next to the DB-25 terminal connector.

see other modem pages


301-924-7400 EXT 25

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