Comtech EF Data CDD-562L - Manual (Page 219)

CDD-562L/564 Demodulator with IP Module Revision 2
Appendix D MN/CDD564L.IOM
D–3
D.3 NMCS Protocol
D.3.1 Overview
The sections that follow outline the basic command set supported in this version of the CIM NMCS protocol.
D.3.2 Telnet Interface
Telnet interface into the NMCS system must be on port 7023, which has been reserved for this protocol by the IANA.
The login process requires a user name and password, which are defined by the systems administrator. This user name and password are
usually associated to the name and password of an administrator account.
D.3.3 Basic Protocol
All bytes within a command are printable ASCII characters, less than ASCII code 127. In this context, the Carriage Return (cr) and Line
Feed (lf) characters are considered printable.
All messages from Controller to Target require a response as indicated. This will be either to return data that has been requested by the
controller, or to acknowledge reception of an instruction to change the configuration of the target.