Fax and voice features

• Fax Class 1 and 2
• Fax and voice support via CAPI
• Fax sub-addressing (SUB), polled document selection (SEL), password (PWD), non-standard facility frames (NSF)
• Fax compression (MH, MR 2D coding, MMR T.6 coding) and error-correction mode (ECM)
• SFF and plain text (ASCII) support
• Fax connections up to 33.6 kbps (V.34)
• Fax polling
• Extended fax operation
• Fax tone detection
• Reversal of fax direction
• Dynamic switching of B-channel protocols
• DTMF/MF transmission and detection
• DTMF/MF clamping
• Extended tone processing (human talker detection, generation and detection of country-specific tones)
• Cross-board switching via interline connect (DSP-based monitor, bridge, and mixer for voice connections: supports multiline conference calls)
• Page formats: ISO A4, ISO B4, ISO A3, special page formats
• Standard, fine, super-fine, and ultra-fine resolution
• Echo cancellation (G.168, up to 256 ms tail length (default is 128 ms))
• Real-time transport protocol (RTP)
• Dynamic anti-jitter buffering
• Comfort noise generation (CNG)
• Voice activity detection (VAD)
• Support for color fax (JPEG format) via CAPI