Congestion control in signaling system 7 (SS7) is a necessity for fulfilling the requirements of a telecommunication network that provides customer satisfaction. Heavy network load is a source of customer dissatisfaction as congested networks result in unsuccessful calls. With the introduction of network profit as a metric, it is possible to study the efficiency of an annihilation congestion control algorithm (ACCM) from the operator's point of view. Several strategies for applying the ACCM are investigated. A model describing the income and cost for a call is also introduced