A method for preventing overload conditions in a communication system, the method comprising the steps of: establishing a threshold value; performing a call load analysis; the method being CHARACTERIZED IN THAT the call load analysis is based on a plurality of instantaneous call load values for subscribers admitted to the communication system and comprising the further steps of: calculating an average call load value for the admitted subscribers, wherein the instantaneous call load values are determined independently of jamming power experienced by the communication system; comparing the established threshold value to the average call load value; and admitting to the communication system a subscriber requesting admission to the communication system when the average call load value is below the established threshold value, wherein the instantaneous call load values for the subscribers admitted to the communication system are calculated using the equation ∑ l = 1 L ∑ j = 1 M t υ j, l ⁢ E b N t j, l m W R j, l + υ j, l ⁢ E b N t j, l m where M l is the number of subscribers admitted to the communication system in cell l, j is a subscriber index, v j,l is a voice activity factor for the subscriber j in cell l, E b N t j, l m is a signal to noise ratio for subscriber j in cell l measured at cell m, and W R j, l is a processing gain for subscriber j in cell l which processing gain is ratio of subscriber j in cell l carrier signal bandwidth, W, to subscriber j in cell information rate, R; and calculating an average call load from the plurality of call load values. establishing a threshold value; performing a call load analysis; the method being CHARACTERIZED IN THAT the call load analysis is based on a plurality of instantaneous call load values for subscribers admitted to the communication system and comprising the further steps of: calculating an average call load value for the admitted subscribers, wherein the instantaneous call load values are determined independently of jamming power experienced by the communication system; comparing the established threshold value to the average call load value; and admitting to the communication system a subscriber requesting admission to the communication system when the average call load value is below the established threshold value, wherein the instantaneous call load values for the subscribers admitted to the communication system are calculated using the equation ∑ l = 1 L ∑ j = 1 M t υ j, l ⁢ E b N t j, l m W R j, l + υ j, l ⁢ E b N t j, l m where M l is the number of subscribers admitted to the communication system in cell l, j is a subscriber index, v j,l is a voice activity factor for the subscriber j in cell l, E b N t j, l m is a signal to noise ratio for subscriber j in cell l measured at cell m, and W R j, l is a processing gain for subscriber j in cell l which processing gain is ratio of subscriber j in cell l carrier signal bandwidth, W, to subscriber j in cell information rate, R; and calculating an average call load from the plurality of call load values. calculating an average call load value for the admitted subscribers, wherein the instantaneous call load values are determined independently of jamming power experienced by the communication system; comparing the established threshold value to the average call load value; and admitting to the communication system a subscriber requesting admission to the communication system when the average call load value is below the established threshold value, wherein the instantaneous call load values for the subscribers admitted to the communication system are calculated using the equation ∑ l = 1 L ∑ j = 1 M t υ j, l ⁢ E b N t j, l m W R j, l + υ j, l ⁢ E b N t j, l m where M l is the number of subscribers admitted to the communication system in cell l, j is a subscriber index, v j,l is a voice activity factor for the subscriber j in cell l, E b N t j, l m is a signal to noise ratio for subscriber j in cell l measured at cell m, and W R j, l is a processing gain for subscriber j in cell l which processing gain is ratio of subscriber j in cell l carrier signal bandwidth, W, to subscriber j in cell information rate, R; and calculating an average call load from the plurality of call load values.