Configuring the CS 1000E CP PM Call Server Page 157 of 466Communication Server 1000E Installation and CommissioningConfiguring pseudo-terminals (PTYs)CS 1000E provides two ports (COM1 and COM2) on the CPU. A TerminalServer is used to provide additional serial ports for specific applications, suchas, CTY, MCT, PMS, and TRF. Each configured Terminal Server serial portautomatically starts an rlogin session with a user ID to a dedicated pseudo(PTY) port in the CS 1000E system. Nortel recommends configuring at leasttwo PTYs for general use (rlogin sessions with no user ID). In practice, amaximum of 14 PTYs can be used, leaving 2 TTYs for COM1 and COM2 onthe CPU card. Login to PTY is case sensitive.Every PTY configured is given a user ID "PTYx", where x is the port numberassigned to the PORT prompt. If no input is entered for the PORT prompt, thedefault value is the same as the TTY number. Nortel recommends using thedefault value for easy management. When an rlogin session is initiated witha user ID, the Call Server searches for a free PTY with a matching user ID.The search starts with the highest configured PTY number and progresses indescending order of the PTY number. If no free PTY with a matching user IDis found, the connection is refused. In this case, TTY012 message is printedon the administration terminal. When an rlogin session is initiated with nouser ID specified, the Call Server searches for a free PTY. The search startsfrom the lowest configured PTY number and progresses in ascending orderof the PTY number. The first available PTY is used to open the rlogin session.In order to minimize the probability of having a PTY configured for a specificapplication being used for general rlogin sessions, PTYs of specificapplications are configured to start with the highest TTY number, such as 15,and progress in descending order. PTYs for general use are configured to startwith the lowest number and progress in ascending order.Follow Procedure 32 to configure pseudo-terminals.Procedure 32Configuring pseudo-terminals (PTYs)Nortel recommends that at least two PTYs be configured. A maximum of fourPTYs can be allocated on a CS 1000E system.1 Enter the command:LD 17
