HP StorageWorks 2/64 HP StorageWorks Core Switch 2/64 Getting Started & Ge - Page 86

Modem Serial Port Specifications, troubleshooting. The HP StorageWorks Core Switch 2/64 detects modems

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Modem Serial Port Specifications Each CP card has a modem serial port with a fully RS-232 compliant DB-9 connector (see Figure 21 on page 59). 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 in use. The modem port can be used to attach a modem to each CP card and perform dial-in support operations including switch configuration and troubleshooting. The HP StorageWorks Core Switch 2/64 detects modems only during the power-on or reboot sequences, and automatically initializes them for operation. If modems are connected to an operating switch, a power on/off cycle, reboot, or fast reboot is required in order to detect the modem(s). Customers should connect a "Y" cable on the telephone line to each modem The active CP card answers on the first ring and the standby CP card answers on the 7th ring if the active CP card has failed to answer Table 17. Modem Serial Port Pin Out 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 78 getting started and general reference guide

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78
getting started and general reference guide
Modem Serial Port Specifications
Each CP card has a modem serial port with a fully RS-232 compliant DB-9
connector (see
Figure 21
on
page 59
).
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 in use.
The modem port can be used to attach a modem to each CP card and
perform dial-in support operations including switch configuration and
troubleshooting. The HP StorageWorks Core Switch 2/64 detects modems
only during the power-on or reboot sequences, and automatically initializes
them for operation. If modems are connected to an operating switch, a
power on/off cycle, reboot, or fast reboot is required in order to detect the
modem(s).
Customers should connect a “Y” cable on the telephone line to each modem
The active CP card answers on the first ring and the standby CP card
answers on the 7th ring if the active CP card has failed to answer
Table 17.
Modem Serial Port Pin Out
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