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Dual internal short range modem Tau-PCI/G703

Discontinued, recommended replacement is: Tau-PCI/2E1


Dual short range modem Tau-PCI/G703 Features:
  • Up to 2.5 km
  • Two G.703 2.048 Mbps line interfaces
  • Extra V.35/RS-530/RS-449/RS-232 data interfaces
  • Full duplex synchronous mode
  • Selectable data rates
  • Local and line loopbacks
  • Internal modem for PCI bus
  • Declaration of compliance D-MDPD-7910

The Tau-PCI-G.703 is an adapter board for IBM PC and compatible computers with PCI bus. It incorporates two G.703 short range modems and two optional digital interfaces. The short range modems operate at distances of up to 2.5 km

There are several models of Tau-PCI-G.703 modem that differ by type of digital interface.


PC Bus Interface
Bus Type PCI, 33 MHz/32 bit
Serial Interfaces
Data Transfer Rate per direction for each channel simultaneous operation 10 Mbps
Bit Rate Generator Independent per channel
Synchronous Protocol HDLC
Error Detection Cyclic Redundancy Check CRC-16, CRC-CCITT
Clock Options TXCIN, RXCIN, TXCOUT or DPLL, Software selectable per channel
Modem Control Signals DTR, DSR, CTS, RTS, CD
G.703 Interfaces (2048 kbps)
Data Transfer Rate 64, 128, 256, 512, 1024 and 2048 kbps, Software selectable per channel
Line Code AMI or HDB3, Software selectable per channel
Line Impedance 120 Ohm (Twisted Pair) or 75 Ohm (Coax Cable), Jumpers selectable per channel
Receive Signal Attenuation Range from 0 to -43 dB (up to 2.6 km of 22 AWG twisted-pair cable)
Line Attenuation Monitoring 4 Levels: 0 dB, -9.5 dB, -19.5 dB, -28.5 dB
Jitter Attenuator 32 bits depth, in the receive path
Error Detection Bipolar Violation
Board Size Height: 100 mm, Width: 167 mm
Operating Systems and Protocols
Linux PPP, Cisco/HDLC, Frame Relay
FreeBSD 4.x, 5.x, 6.x
(FreeBSD 7.x is not supported)
PPP, Cisco/HDLC, Frame Relay


Некоторые документы хранятся в формате Adobe® Acrobat® Reader®

PDF  User's Manual in Russian
PDF  User's Manual in English
PDF  Driver Development Kit Manual in Russian
TXT  V.35 cable scheme
TXT  RS-232 cable scheme
PDF Справочник по интерфейсным кабелям Cronyx.

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