TDM800P

The TDM800P is a 8 port analogue card that can have a mixture of FXO and FXS port totalling no more than 2 cards or a total of 8 ports mixing FXO and or FXS ports.
The following configuration is to configure the card with dual quad FXS card.

/etc/zaptel.conf

fxsks=1-8

/etc/asterisk/zapata.conf

signalling=fxs_ks
group=1
channel => 1-8

NOTE:The order of the lines above is important. The signalling must come before group and group must come before channel.

If you Digium card has an echo cancellation board install also add the following line to enable echo cancellation.
/etc/asterisk/zapata.conf

echocancel=yes