IBM TotalStorage 2109 M12, Инструкция по установке и обслуживанию

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Table 16. Pinouts with signal and description
Pin Signal Description
1
2 TxData Transmit data
3 RxData Receive data
4
5 GND Logic ground
6
7
8
9
Modem serial port specifications
Each CP card has a modem serial port (labeled RS–232) with a fully RS–232
compliant DB–9 connector.
Note: For dust and ESD protection, a cover is provided for the serial port and
should be kept on the port whenever the serial port is not being used.
You can use the modem serial port to attach a modem to each CP card. The M12
detects modems only during the power-on or restart sequences, and automatically
initializes them for operation. If modems are connected to an operating switch, a
power on and off cycle, restart, or fast restart is required in order to detect the
modems.
Customers should connect a “Y” cable on the telephone line to each modem. The
active CP card answers on the first ring. The standby CP card answers on the
seventh ring if the active CP card fails to answer.
The modem serial port pinouts are listed in Table 17.
Table 17. Modem serial port pinouts
Pin Signal Description
1 DCD Data carrier detect
2 RxData Receive data
3 TxData Transmit data
4 DTR Data term ready
5 GND Logic ground
6 DSR Data set ready
7 RTS Request to send
8 CTS Clear to send
9 RI Ring indicator
Fibre-channel port specifications
The fibre-channel ports in the M12 support full duplex link speeds at 2.125 Gbps or
1.0625 Gbps inbound and outbound. The ports automatically negotiate to the
highest common speed of all devices that are connected to the port. Each port has
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IBM TotalStorage SAN Switch: 2109 Model M12 Installation and Service Guide