[port_config] ; E1 PUBLICO da Intelig context=from-e1-externo signalling=r2mfc_ndis_fixed min_digits_rx=1 max_digits_rx=4 interdigit_timeout=2500 b_subscriber_hangup=0 port_id=1133047700 cid_pos=2 category=1 group_b_value=1 ;1-FREE_CALLING tx_gain = -2 rx_gain = 4 echocan=1 accountcode=e1 silence_threshold=-18 ports => 1-30