This paper addresses the important issue of providing bal- anced allocation of the interconnection costs between networks. We ana- lyze how bene cial is the determination of the original initiator of a trans- mission to the providers of di erent layers. The introduced model, where intercarrier compensation is based on the di erentiated tra c ows, was compared with the existing solution, which performs cost compensation based on the tra c ows. For our analysis we considered both unilateral and bilateral settlement arrangements.