Cisco AS5800 Voice Feature card, is a full featured voice processing card that supports up to 192 DSP-based voice ports. Voice processing capabilities include VAD (Voice Activity Detection), comfort noise generation, adaptive jitter buffering, programmable 16 and 32msec echo cancellation, programmable frame size, and DTMF (Dual Tone Multiple Frequency) detection and generation. The AS5800 Voice Feature card offers industry-leading DSP density and a wide range of VoIP codecs, including G.711, G.729, G.729a, G.723.1, and Group III real-time fax support, on any port at any time.