PCI Express devices

Our Echo Express Voice Recording boards provide powerful features for building advanced Digital Voice Recorders. Each card occupies a single PCI Express slot and combines a compact form factor with very low power consumption resulting in unmatched reliability.

PCI ExpressCard

On-board DSPs and large streaming buffers impose very little demand on system and application resources.

D-channel signalling supports Call Setup, Connect, Clear, DDI number and CLI number decoding. It also supports all major ISDN variants, Q.SIG, DASS-2, DPNSS and various PBX Digital handset D-channel protocols. This means that simultaneous recording on all channels of both upstream and downstream sides of a conversation is possible

The speech encoding/compression used is 64kbit/s A-law (G.711), 36kbit/s proprietary encoding. The estimated MTBF is 600,000 hours.

Features & benefits

  • High density half length PCI Express card.
  • Fits in every x1, x2, x4, x8 and x16 PCIe slot.
  • Non intrusive and undetectable high impedance passive monitoring
  • Dialled number and Caller ID signalling support
  • Digital Signal Processors for voice streaming and on-board D-channel protocol processing
  • Models for PRI-ISDN, T1-ISDN, BRI-ISDN, Digital handsets and Analog handset / trunk lines.
  • 8 channel and 16 channel Analog, Digital handset and S0 bus models
  • Fractional, 30 channel and 60 channel PRI-ISDN / E1 models
  • 23 channel and 46 channel T1-ISDN models
  • Protocol support for all major ISDN variants, Q.SIG, DASS-2 and DPNSS
  • Analog models support DTMF, FSK Caller ID, AGC and speech detection
  • Digital models support all major PBX with highly accurate DigitalVox start/stop triggering and D-channel support for various PBXs
  • Accurate start/stop triggering for non-protocol E1/T1 PCM applications
  • Supports Windows XP SP3, Vista, 7, 8, 10, Server 2003, 2008 and 2012
  • 64kbit/s A-law and high quality compressed 36kbit/s speech encoding
  • Supports writing of directly playable WAV files to disk
  • CE, FCC and RoHS compliance

Technical specifications

Mechanical CharacteristicsHalf length PCI Express card
Operating temperature0 oC to +60 oC
Humidity5% to 80% non-condensing
Maximum power requirements+5Vdc (400 mA), +12Vdc (50 mA), -12Vdc (50 mA)
Operating Systems supportedAll 32-bit and 64-bit Windows editions
Maximum densityUp to 12 boards or 720 ports total

PRI specifications

RateE1 (2.048Mb/s), T1 (1.544Mb/s)
AC Impedance1100Ω
Maximum tap length100m (Terminated), 10m (Unterminated)
Protocol supportAll major ISDN variants: Q.SIG, DASS-2, DPNSS

BRI specifications

Type4-wire S0 bus
AC ImpedanceLine matched
Maximum tap length500m
Protocol supportEuro-ISDN

Digital Extension Interface specification

Type4-wire S0 bus
AC ImpedanceLine matched
Maximum tap length500m
Protocol supportEuro-ISDN