Exchanging cryptographic keys to encrypt the media stream in the Session Initiation Protocol (SIP) has proven difficult.
A growing trend for information technology is to not just react to changes, but anticipate them as much as possible.
Academic and industrial research initiatives have sought to make fully autonomic networks a reality.
Two Electronic Switching Systems have been developed by Bell Telephone Laboratories for general application in the Bell System; both are now in quantity manufacture by the Western Electric Company.
With the ever increasing number of electronic devices in the home and workplace and the impressive increases in their functional complexity, it's not surprising that there has been a growing concer
After about a decade of intense research, spurred by both economic and operational considerations, and by environmental concerns, energy efficiency has now become a key pillar in the design of comm
Our working assumptions are that i) the performance of data communications is increasingly held back by limits other than bandwidth and ii) removing these limits will often involve simple inexpensi
A G N E T I C materials may be classified according to properties into two groups: (1) soft magnetic materials, and (2) hard or permanent magnet materials.
Magnetic materials are generally divided into three classes: soft magnetic materials with coercivity H sub c less than about 10 A/cm, hard magnetic materials with H sub c greater than 100 A/cm, and
In the past several decades, maintenance and replacement problems of deteriorating systems have been extensively studied in the literature.
