General

• Board Set Capacity: 30 ports per board
• DSP Processing Power: 5.7 MIPS per port
• Software Development Kits:
  

  AG Access for Windows NT, OS/2, UnixWare, SCO Unix
  ME/2 for OS/2
  ME/X for SCO Unix, Unixware

• Software Switching Support through SwitchPath

Host Interface

• Electrical: PC/AT bus designed to IEEE P966 ISA
• Mechanical: PC/AT form factor, design meets IBM's PC/AT Prototype Adapter Reference Manual #6361674 specifications
• Bus Speed: 4 - 12 MHz
• Maximum Number of Boards per System: 16
• Maximum Number of Ports per System:
  

  For AG Access: limited only by host processor resources
  For ME/2 and ME/X: 120 ports per chassis

• I/O Mapped Memory: 128 KB of on-board interface memory accessed at DMA rates via I/O string move
• Interrupts: Choice of 7 software configurable interrupt lines with all voice boards sharing only 1 interrupt line

Audio Signal Processing

• Receive Range: -68 to +3 dBm (optional configurable AGC above nominal -44 dBm)
• Transmit: Programmable (nominal -12 dBm)
• Silence Detection: Programmable (nominal -44 dBm)
• Frequency Response - Audio Signal
  

  225 to 3400 Hz ±0.5 dB
  160 to 3475 Hz +0.5 -3 dB

• Sampling Rates: 8 Ksamples/sec (telephone industry standard)
• Speech: Compression rates from 16 to 176 Kbps
  

  88 Kbps & 176 Kbps using 8- or 16-bit linear at 11 Ksamples/sec (.WAV)
  128 Kbps 16-bit linear at 8 Ksamples/sec
  64 Kbps m-law or A-law per ITU-T G.711
  32 Kbps ADPCM using ITU-T G.726 algorithm
  24 Kbps ADPCM using ITU-T G.726 algorithm
  16 Kbps NMS adaptive coding
  32 Kbps OKI compatible ADPCM
  24 Kbps OKI compatible ADPCM

Tone Dialing

• DTMF Digits: 0 - 9, *, # and ABCD per ITU-T Q.23 and Q.24
• MF digits: 0 - 9, KP, ST, ST1, ST2, ST3 per US(R1) and ITU-T Q.321 and European MFC/R2 forward/reverse tones per ITU-T Q.441
• Rate: Programmable (10 digits/sec nominal)
• Wait-for-dial-tone Capability
• Dialing Parameters: Software controllable
• Dialing amplitude: Network compatible (configurable by country) programmable range -33 dBm to 1 dBm

Pulse Dialing

• 10 Digits: 0 - 9
• Pulsing Rate: 10 pulses/sec (nominal)
• Make/Break Ratio: Network compatible (configurable by country) 40/60 nominal

DTMF Tone Detection

• DTMF Digits: 0 - 9, *, #, ABCD
• Dynamic Range: -47 dBm to 0 dBm per tone, programmable
• Tone Duration: 40 ms (minimum)
• Acceptable Twist: 10 dB
• Talk-off: Exceeds all Q.24 standards including Mitel CM 7291 and Bellcore TR-TSY-000762 tests

MF Tone Detection

• MF Digits: 0 - 9, KP, ST, ST1, ST2, ST3 per US(R1)
• MFC/R2 Digits: All 15 codes, forward and backward
• Dynamic Range: Network compatible (configurable by country) -35 dBm to -5 dBm (nominal)

On-Board Processors and Memory

• DSPs: 6 Texas Instruments TMS320C51 DSPs at 28.5 MIPS each
• Microprocessor: 25 MHz 80386SX
• Memory: 4 MB of dedicated DRAM and 256 KB of fast static RAM for the on-board microprocessor (128 KB shared with the host and 128 KB shared with the DSPs)

Power Requirements

• Power: 2.0 Amps per board of PC/AT power at +5 volts

Regulatory Certification (USA and Canada)

• EMI: FCC Part 15, Subpart J, Class A

Environment

• Operating Temperature: 0°C to 50°C
• Storage Temperature: -20°C to 70°C
• Humidity: 5 to 80%, non-condensing