Method and arrangement in a telecommunication system for estimating frequency dependent resistance of a transmission line. The method further includes creating an REI data record comprising the plurality of new attributes. Also, the invention relates to a system which includes a vendor tracking system comprising an industrial operator interface, with communication, local data processing, and data storage capabilities, which provide an efficient information resource for service and product control. The third layer is disposed between the first and second layers. The liquid comprises a polyvalent metallic salt and at least one of a polymer swelling and a coalescence reagent.