root@tooth:/etc/asterisk# cat chan_dahdi.conf /etc/dahdi/system.conf

[trunkgroups]
trunkgroup=1,10
span=1,1,1

[channels]
language=br
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=no
callgroup=1
pickupgroup=1

; Sample 1
signalling=mfcr2
mfcr2_variant=br
;mfcr2_get_ani_first=yes
mfcr2_get_ani_first=no
;mfcr2_metering_pulse_timeout=500
mfcr2_max_ani=20
mfcr2_max_dnis=4
mfcr2_category=national_subscriber
; The next three params are for debuging, you can disable when in production
mfcr2_call_files=yes
mfcr2_logdir=oi
mfcr2_logging=all

context=from-pstn
group=1
channel=>1-15,17-31

#include dahdi-channels.conf
# Autogenerated by /usr/sbin/dahdi_genconf on Thu Nov  7 12:11:08 2013
# If you edit this file and execute /usr/sbin/dahdi_genconf again,
# your manual changes will be LOST.
# Dahdi Configuration File
#
# This file is parsed by the Dahdi Configurator, dahdi_cfg
#
# Span 1: WCT13x/0 "Wildcard TE133 Card 0" (MASTER)
span=1,1,0,cas,hdb3
cas=1-15:1101
cas=17-31:1101
echocanceller=mg2,1-15,17-31

# Global data

loadzone	= br
defaultzone	= br
root@tooth:/etc/asterisk#