Technical Description of TANDBERG MCU with software version D3
D12925 Rev. 03
23
4.3 RS232 Interface/Application Programmable Interface (API)
Data Standards
Data
TANDBERG Dynamic Data Channel (DDC)
Modem
Standard
modem
commands
Data Interfaces
1 x Data port, RS-232 (9-pin D-sub), Up to 115200 Baud for Data & Control
The RS232 port on the TANDBERG MCU is implemented as Digital Circuit Terminating
Equipment (DCE).
The connectors used are female 9-pin D-subs and the pin-out is shown in table below.
Signal Name
Direction
Pin number
Carrier detect, CD
From DCE
1
Receive data, RXD
From DCE
2
Transmit data, TXD
To DCE
3
Data terminal ready, DTR
From DCE
4
Signal ground, GND
5
Data set ready, DSR
From DCE
6
Ready to send, RTS
To DCE
7
Clear to send, CTS
From DCE
8
Ring indicator, RI
From DCE
9
Note: The API commands may also be accessed via Telnet, through the MCU’s Ethernet
connection.
4.3.1 API
commands
Please refer to the document ‘TANDBERG MCU API’ (D12930) for details.
The RS232 port is used for local software upgrades, local control and diagnostics.
Also, refer to ‘TANDBERG SNMP’ (D12190) for SNMP implementation.
