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Chapter 8. SERIAL INTERFACE OPERATION
8.1
Introduction
1) Use of the serial-based remote product management interface is recommended only for advanced users. All other users are
strongly encouraged to use the CDM-760 front panel or CDM-760 HTTP (Web Server) Interface for monitor and control (M&C) of
the CDM-760. See Chapter 6. FRONT PANEL OPERATION or Chapter 7. ETHERNET-BASED REMOTE PRODUCT MANAGEMENT.
2) You may proceed with serial-based remote product management, assuming that:
•
The CDM-760 is operating with the latest version firmware files.
•
The CDM-760 is connected to a user-supplied, Windows-based PC, and:
o The PC serial port is connected to the CDM-760 rear panel J3 | REMOTE port with a user-supplied serial cable.
o The PC Ethernet port is connected to either the CDM-760 rear panel J4 | MGMT 10/100 BaseT Ethernet port or the
optional High-Speed Packet Processor P0 | MGMT port with a user-supplied hub, switch, or direct Ethernet cable
connection.
o The PC is running a terminal emulation program (for operation of the CDM-760 Serial Interface) and a compatible web
browser (for operation of the HTTP Interface).
•
The CDM-760 Management IP Address has been noted using the CDM-760 front panel (CONFIG>IP>ADDRESSES).
The CDM-760 Advanced High-Speed Trunking Modem serial remote product management interface is an electrical interface that is either an
EIA-485 multi-drop bus (for the control of multiple devices) or an EIA-232 connection (for the control of a single device). The interface transmits
data in asynchronous serial form, using ASCII characters. This data consists of control and status information, transmitted in packets of variable
length in accordance with the structure and protocol explained later in this chapter.
8–1
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