Rockwell RFX144V24-S23, Designer'S Manual

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RFX144V24-S23 and RFX96V24-S23 Modem Designer’s Guide
1070 1-3
1.2 FEATURES
• Group 3 facsimile transmission/reception
- ITU-T V.17 and V.33 (RFX144 models)
- ITU-T V.29, V.27 ter, T.30, V.21 Channel 2, T.4
- HDLC framing at all speeds
- Receive dynamic range: 0 dBm to -43 dBm
- Automatic adaptive equalization
- Fixed and programmable digital compromise equalization
• V.27 ter short train
• V.21 channel 2
- DTMF detect and tone detect
• Caller ID reception
- Compromise equalizer
• DigiTalk™ voice codec (V24 Option)
- 24 minutes of voice storage per 4 Mbit memory
- Near toll quality voice recording and playback
- Programmable AGCs
- Error correction coding allows ARAM usage
- DTMF detect, tone detect, and tone transmit
- Pitch synchronized fast and slow playback
- Near-end echo cancellation
• ADPCM audio codec (V24 Option)
- High fidelity recording and playback of audio signals
- 32 kbps and 24 kbps
- Programmable AGC
- DTMF detect, tone detect, and tone transmit
- Near-end echo cancellation
• 8-bit or 16-bit high quality audio mode transmission/
reception
• Room monitor
• DigiTalk™ full-duplex speakerphone (-S Option)
- Acoustic echo cancellation
- Line echo cancellation
- Programmable microphone AGC
- Programmable speaker AGC
- Microphone volume selection and muting
- Speaker volume control and muting
30 dB speaker volume control range in 2 dB steps
- Two DTMF generators and one tone detector
- Auto fallback toward pseudo-duplex operation under poor operating conditions
- Programmable handset echo simulation in handset operation