Hi<br><br>What should be the optimal settings for HWEC related parameters in wanpipe1.conf to be able to receive Fax over T.30 on a Sangoma A108DE Card ?<br><br>In particular, should I enable echo ? If yes, to what parameter ? What other values like RXGAIN, TXGAIN should I tune ?<br>
<br>TDMV_HW_DTMF                          = YES           # YES: receive dtmf events from hardware<br>TDMV_HW_FAX_DETECT              = YES           # YES: receive fax 1100hz events from hardware<br>HWEC_OPERATION_MODE           = OCT_NORMAL    # OCT_NORMAL: echo cancelation enabled with nlp (default) <br>
                                                                                # OCT_SPEECH: improves software tone detection by disabling NLP (echo possible)<br>                                                                                # OCT_NO_ECHO:disables echo cancelation but allows VQE/tone functions. <br>
HWEC_DTMF_REMOVAL               = NO    # NO: default  YES: remove dtmf out of incoming media (must have hwdtmf enabled)<br>HWEC_NOISE_REDUCTION           = NO    # NO: default  YES: reduces noise on the line - could break fax<br>
HWEC_ACUSTIC_ECHO                 = NO    # NO: default  YES: enables acustic echo cancelation<br>HWEC_NLP_DISABLE                    = NO    # NO: default  YES: guarantees software tone detection (possible echo)   <br>HWEC_TX_AUTO_GAIN                 = 0     # 0: disable   -40-0: default tx audio level to be maintained (-20 default)<br>
HWEC_RX_AUTO_GAIN                 = 0     # 0: disable   -40-0: default tx audio level to be maintained (-20 default)  <br>HWEC_TX_GAIN                            = 0             # 0: disable   -24-24: db values to be applied to tx signal<br>
HWEC_RX_GAIN                            = 0             # 0: disable   -24-24: db values to be applied to tx signal<br><br><br clear="all">regards,<br>Anita<br><br>