Swapnil Kumar A PBX (Private Branch Exchange) is a switch station for telephone systems. It consists mainly of several branches of telephone systems and it switches connections to and from them, thereby linking phone lines. Companies use a PBX for connecting all their internal phones to an external line. This way, they can lease only one line … Read more
In the Integrated Services Digital Network (ISDN), there are two levels of service: the Basic Rate Interface (BRI), intended for the home and small enterprise, and the Primary Rate Interface (PRI), for larger users. Both rates include a number of B-channels and a D-channel. Each B-channel carries data, voice, and other services. The D-channel carries … Read more
> check the current hostname login on server as root user run the command: hostname > change the hostname: hostname newname
> login on server through putty with current username & password > type: passwd root it will ask to put the new password…thats it