Mine

;NT mode - extension card
nocid=Unavailable
withheldcid=Withheld
language=en
usecallerid=yes
callwaiting=yes
nationalprefix=0
internationalprefix=00
switchtype = euroisdn
signalling = bri_net_ptmp
pridialplan=local
prilocaldialplan=local
echocancel=yes
echocancelwhenbridged=no
immediate=no
overlapdial=yes
group = 2
context=isdn-phones-in
channel => 4-5