[channels]
; Sangoma A104 port 1 (channels 1-24) (outbound T1 to PSTN)
        context=empty
        transfer=no
        threewaycalling=no
        group=1
        signalling=em_w
        channel => 1-24

; Sangoma A104 port 2 (channels 26-36) (internal T1 to stations)
        context=from-internal
        transfer=yes
        threewaycalling=no
        echocancel=yes
        echocancelwhenbridged=yes
        usecallerid=yes
        group=2
        signalling=fxo_ks
        channel => 26-36

; Sangoma A104 port 3 (channels 49-72) (internal T1 to stations)
        context=from-internal
        transfer=yes
        threewaycalling=no
        echocancel=yes
        echocancelwhenbridged=yes
        usecallerid=yes
        group=3
        signalling=fxo_ks
        channel => 49-72

; Sangoma A104 port 4 (channels 73-96) (internal T1 to CO channel bank)
        context=from-external
        transfer=no
        threewaycalling=no
        echocancel=yes
        echocancelwhenbridged=yes
        group=4
        signalling=fxs_ks
        channel => 73-96

;-----------------------------------
; Administrative Zap channels
;-----------------------------------

; Sangoma A104 port 2 (channels 25,37-48) (internal T1 to stations)
        context=from-sip
        transfer=yes
        threewaycalling=yes
        echocancel=yes
        echocancelwhenbridged=yes
        usecallerid=yes
        group=2
        signalling=fxo_ks
        channel => 25,37-48