Abstract: A system and method for use with communications systems is used as an interface between different communications architectures. Control blocks are used to store information pertaining to individual communications sessions, or links. Communication link identifiers are different for the two different communications architectures. The interface provides an efficient technique for bidirectionally translating such link identifiers. Identifiers from routines implementing each architecture are used to generate pointers to the appropriate control blocks for each communications session. These control blocks are then used by routines interfacing to the other architecture to extract the translated identifiers.