Getting a handle on the invisible part of your network—the protocols that are in use—can be of enormous value in helping you detect problems. So far, we've talked about the tangibles of your ...

The processing in a network protocol that initiates and terminates a session. The session layer is layer 5 of 7 in the OSI model. See TCP/IP and OSI model. THIS DEFINITION IS FOR PERSONAL USE ONLY.

Integrated Services Digital Network (ISDN) provides for digital transmission over ordinary telephone copper wire as well as over other media uses. In this continuation of his tip on ISDN ...