subscribers are segmented in a telecommunications by allocating given first subscribers network resources with a lower priority than second subscribers , but allowing the first subscribers to temporarily upgrade their subscription by a self - service request . on detecting the request , the network updates the charging correspondingly and adapts the resource allocation of the first subscribers who made the request for a predetermined period and / or amount of phone calls . the network is also capable of signaling the subscribers their current resource allocation priority so that the subscribers can provide respective users with a feedback of changes in resource allocation . the mechanism is also applicable for temporarily lowering the priority of given subscribers in resource allocation .