The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
An M/M/m queue with mixed loss and delay calls was analyzed by J. W. Cohen half a century ago (1956) where the two types of calls had identical constant arrival and service rates. It is straightforward to extend his analysis to an M/M/m/K queue. In this chapter, we further generalize the model such that the call arrival rates can depend on the number of calls present in the system at the arrival time...