Hi! According "Transformations cookbook" exist string, uri, name transformations. I think need ip transformations, simulary atoi()/aton() and split for stings with divider. By the way: avp_subst("$avp(s:sipa)/$avp(s:abc)/g", "/(.*)\.(.*)\.(.*)\.(.*)/\1/"); avp_subst("$avp(s:sipa)/$avp(s:def)/g", "/(.*)\.(.*)\.(.*)\.(.*)/\2/"); avp_subst("$avp(s:sipa)/$avp(s:ghk)/g", "/(.*)\.(.*)\.(.*)\.(.*)/\3/"); avp_subst("$avp(s:sipa)/$avp(s:xyz)/g", "/(.*)\.(.*)\.(.*)\.(.*)/\4/"); $avp(s:numipa)=$avp(s:abc{s.int})<<24||$avp(s:defi{s.int})<<16||$avp(s:ghki{s.int})<<8||$avp(s:xyz{s.int}); where is error? -- SY, Victor JID: coyote(a)bks.tv JID: coyote(a)bryansktel.ru I use FREE operation system: 3.8.4-calculate GNU/Linux