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Intel® IXP400 DSP Software V2.6.2: Specification

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Intel® IXP400 DSP Software V2.6.2: Specification

1.0 Product Context
Intel® IXP400 DSP software V2.6.2 provides basic voice-processing functionality for voice-over-IP (VoIP) applications using the IXP421, IXP423, and IXP425 network processors.

2.0 Product Specifications
Intel® IXP400 DSP software V2.6.2 offers the following general product features:
• ITU T.38 Fax Relay
— V.17 at 14400, 12000, 9600, and 7200 bps fax modulation and demodulation
— V.21 at 300 bps fax modulation and demodulation
— V.27ter at 4800 and 2400 bps fax modulation and demodulation
— V.29 at 9600 and 7200 bps fax modulation and demodulation
• 128-ms echo cancellation
• Selectable (either HSS or External PCM Interface) front-end Pulse Code Modulation (PCM) interface
• Maximum eight voice channels when using G.711 for 533 MHz processor
• ITU-T compatible voice coders:
— G.729ab with VAD and CNG support
— G.711 μ-law and A-law CODEC with 10-ms frame size
— G.711 Annex 2. Support for VAD and CNG
— G.723.1 with 5.3 and 6.3 Kbps rates and VAD and CNG support
— G.722
— G.726 with 16, 24, 32 and 40 Kbps rates and FRC3551 and I.366 Annex E packing formats
— 24 for G.729

Read the full Intel® IXP400 DSP Software V2.6.2 Specification.