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Configuring Echo Cancel

Procedure

1. Configure DSP for Echo Cancel function using the DSP SIMM Configure 0x00C0 message.

DSP Function Type

Echo Cancel (0x33)

2. Set card-level Echo Cancel parameters using the Generic Card Configure 0x0122 message.

Mandatory TLV

0x05FA Card Object

Object ID: Echo Cancel Parameters (0x0005)

Optional TLVs

0x0673 Echo Cancel Tap Length

0x0674 Echo Cancel NLP Type

0x0675 Echo Cancel ADAPT

0x0676 Echo Cancel Bypass

0x0677 Echo Cancel G.176 Modem Answer Detection

0x0678 Echo Cancel NLP Threshold

0x0679 Echo Cancel CNG Noise Threshold

Digital Signal Processor
Tag-Length-Value block. A standardized block that allows data to inserted in a standard way into API messages.