Asynchronous Transfer Mode (ATM) is a protocol that allows data, sound and video being transferred between independent networks via ISDN links to be supplied to, and interpreted by, the various system protocols. This work explains the working of the ATM and B-ISDN network. It also gives an introduct[...]

The Longman Dictionary of Common Errors is based entirely on a corpus of genuine students' writing - the Longman Learner's Corpus. This means it gives a true insight into the common errors that students make in their spoken and written work, and provides clear and easy-to-use methods to avoid and co[...]