A matric potential responder which includes a liquid absorbing swellable nonliquid material held within a housing of a ceramic material environ such as soil, to the material, being subject to a compressive force such as a spring. The blank includes a series of four generally rectangular panels connected along a plurality of substantially parallel fold lines. The present invention makes PE equipments participating pseudo wire service to set up PSN tunnel and LDP signaling session connection with the pseudo wire label reflector by introducing the pseudo wire label reflector and extending the capacity that the current edge apparatus supports the pseudo wire label reflector.