PCI devices

Our Echo PCI Voice Recording boards provide powerful features for building advanced Digital Voice Recorders. Each card only occupies a single standard 5V PCI slot and combines a compact form factor with very low power consumption resulting in unmatched reliability.

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 card
• Fits in every standard 5V PCI 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
• 1, 2, 4, 8 and 16 channel Analog, Digital handset and 4-wire 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