TDM121P

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The Digium TE121 is a high-performance, cost effective digital telephony interface card with the power to create a seamless network, interconnecting traditional telephony systems with emerging Voice over IP technologies. Use the telephony card selector to identify a card that fits your requirements.

/etc/dahdi/system.conf

loadzone        = au
defaultzone     = au

span=1,1,0,ccs,hdb3,crc4
bchan=1-10
dchan=16
echocanceller=mg2,1-10

/etc/asterisk/chan_dahdi.conf

group=3
echocancel=yes
echocancelwhenbridged=no
echotraining=yes
switchtype=euroisdn
context=from_outside
signalling=pri_cpe
channel =>1-10