No abstract

When a group of identical units are put in service simultaneously, a popular replacement policy is the block replacement policy (BRP). Under the BRP, all units are replaced by new ones at intervals and an individual unit is replaced at failure during the interval. Since many units are replaced during the block replacement interval, adequate spare stocking becomes an important factor for performing BRP. In this paper, an expected cost model is formulated for the joint spare stocking and block replacement policy using the renewal process.

Session initiation protocol (SIP) provides advanced signaling, controlling its functionality for a variety of multimedia services. It efficiently and scalably locates resources based on a location-independent name to negotiate session characteristics. To a manager of manufacturing facilities, it gives a command to monitor his facilities equipped with SIP via the Internet. The manager can watch the facilities and his field workers could be given direction through video and voice.