VOCAL’s fax interception software provides fax demodulation for image extraction and decoding

Features

• Extract and decompress page data to viewable image files
• Partial page recovery for damaged and partial recordings
• Processes real-time continuous stream and pre-recorded data
• Automatically classifies traffic by type, including voice, data, facsimile and non-standard or custom types
• Automatically classifies FAX traffic by modulation and non-standard or custom types
• Supports both V.34 FAX and low speed FAX (V.17, V.29, V.27ter, V.21 Channel 2)
• Supports T.30 Group 3 Facsimile Timing and Control Procedure
• Supports T.30 Error Correction Mode (ECM)
• Supports T.4 One and two dimensional (MH and MR) image decoding procedures
• Supports T.6 MMR Image Format Conversion

Benefits

• The fax image decoder can operate at multiple sample rates, including 16 KHz, in order to ensure the highest input signal quality.
• The facsimile monitoring module for PSTN lines includes fax image decoding for both standard facsimile as well as machines that make use of manufacturer specific T.30 ‘Non-Standard Facilities’ (NSF) features.
• For recorded files using low-speed demodulation, an auto-detect mode that does not rely on FSK frames is also available. This allows for fax demodulation using NSF negotiation or where control data may not be readily available.
• The fax image decoder ensures accurate image recovery through the use of blind data retrieval and consistency checks, thus avoiding possible compatibility issues with non-standard facsimile machines.
• The output file format of the fax image will be either TIFF or standard Microsoft bitmap format (bmp), and can be selected for a specific implementation.

Deliverables

• ANSI C, Assembly, Binary or Source

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