A P P E N D I X B |
Configuring the Sun Enterprise 250 Server RSC Serial Port Modem |
This appendix applies to Sun Enterprise 250 servers only. When you connect a third-party modem to the Sun Enterprise 250 RSC serial port, you must configure the modem. For other platforms, the modem on the RSC card is preconfigured.
You can access RSC using an Ethernet connection, and you can also install a dedicated modem connected to the RSC serial port for access from outside your company network. For increased security, you can specify a dialback number if the modem supports this feature.
To install and configure the modem, follow the instructions that came with it. This appendix gives examples for configuring a MultiTech MultiModem II, MT2834 Series Intelligent Data/Fax Modem (Sun part number 370-2234-03), and a Courier V.Everything modem.
To enable and set up the RSC modem, you should use the following configuration settings unless otherwise indicated. You can use the GUI (graphical user interface) to change configuration settings, or you can use the RSC shell or the rscadm utility to change configuration variables.
Use the following settings to configure the RSC serial port.
For sending pager alerts, RSC is designed to operate with any modem paging service that complies with the Telocator Alphanumeric Protocol (TAP). If you want to support both dial-in to the RSC modem and dial-out to pagers, set the RSC serial port baud rate and pager baud rates to 9600.
Use the following settings to enable and configure pager alerts. Use of pager 2 is optional. You do not need to enter settings for pager 2 if you are using a single pager. In this table, the characters -> indicate menu hierarchy; for example, Alert Settings->Pager means open Alert Settings and then choose Pager.
Alert Settings->Pager->Pager 1->Advanced Modem Init. String: see Modem Initialization Strings |
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Alert Settings->Pager->Pager 2->Advanced Modem Init. String: see Modem Initialization Strings |
The pager phone number is the number for the paging service's TAP connection, and not the number for voice page notifications. It must be a phone number that connects to a modem that adheres to the TAP protocol. You may need to contact your paging service to obtain this number as well as other pager configuration parameters.
Pager phone numbers must include the complete string to dial; for instance, if your internal phone network requires a 9 before the number, include it. You can include a comma (,) after the 9 if a pause is required in order to wait for a dial tone. For example, 9,18005551212.
Use the rscadm modem_setup command to set modem configuration. Arguments to the modem_setup command consist of attention (AT) commands. Then store the settings in the modem's NVRAM.
Use the following initialization:
Use the modem initialization strings for pagers 1 and 2 to allow RSC to set modem parameters required by the paging service during modem setup. The initialization string consists of AT commands.
The variables page_init1 and page_init2 have a maximum length of 15 characters, and are not stored in the modem's NVRAM. Settings in the page_init1 and page_init2 variables complement or override the settings you store in the modem's NVRAM memory using the rscadm modem_setup command. Note that if you use a different phone number or paging service for pagers 1 and 2, you may need to enter different initialization strings for each pager.
See Setting Up the MultiTech MultiModem II for the MultiTech MultiModem II initialization string, and see Setting Up the Courier V.Everything Modem for the Courier V.Everything modem initialization string.
The pager password is the password for the TAP paging service. In most cases in the United States, this password is not used. However, some paging services (for instance, in the United Kingdom) require a password.
Use the following information to set up the MultiTech MultiModem II.
Check that all modem DIP switches for the MultiTech MultiModem II are in the default position, as specified in the following table.
Using the RSC GUI or RSC shell, set the following configuration variables.
The string &D3 sets the modem to reset when DTR drops, the string &E0 disables error correction, the string &E14 disables data compression, and the string $BA1 turns off speed conversion.
To check that these settings are correct, use the rscadm show command.
Use the rscadm modem_setup command to enter the following AT commands.
After executing these AT commands, you can verify the modem settings in NVRAM by using the ATL5 command:
OK ATL5 B1 E1 M1 Q0 R0 V1 X0 &E0 &E4 &E6 &E8 &E10 &E13 &E14 %C0 #C1 *C0 &C1 $MB9600 $SB9600 $BA0 &W0 OK |
After confirming settings, turn the modem off, reset RSC using the GUI or the resetrsc shell command, and then turn the modem on again.
Use the following information to set up the Courier V.Everything modem.
Set the DIP switches for the Courier V.Everything modem according to the following table.
Using the RSC GUI or RSC shell, set the following configuration variables.
The string E1 turns echo on, the string &B1 sets fixed serial port baud rate, the string &M0 disables error correction, the string &K0 disables data compression, and the string &N6 sets baud rate to 9600.
To use a baud rate other than 9600, change the baud rate for pager 1 or 2, and also use the corresponding AT command in the modem initialization string:
To check that these settings are correct, use the rscadm show command.
Use the rscadm modem_setup command to enter the following AT commands.
After executing these AT commands, you can verify the modem settings in NVRAM by using the ATI5 command.
After confirming settings, turn the modem off, reset RSC using the GUI or the resetrsc shell command, and then turn the modem on again.
If you change the RSC serial port baud rate after configuring the modem, you must reconfigure the modem to use the new baud rate. Use a similar procedure if you change the serial parity, data bits, or stop bits setting.
1. Log in as root and use the rscadm modem_setup command.
The modem adjusts automatically to the new baud rate.
2. If desired, adjust the modem's phone line baud rate to match the serial port baud rate.
For example, if you changed the serial port baud rate to 19200, use the following AT commands:
For the MultiTech II MultiModem: AT&$MB19200.
For the Courier V.Everything modem: AT&N10.
3. Write the modem's current settings to the modem's NVRAM, so that the modem will default to the current settings.
For the MultiTech II MultiModem, use this AT command at the OK prompt: AT&W0.
For the Courier V.Everything modem, use this AT command at the OK prompt: AT&W.
You can log in to the host as root and use the command rscadm modem_setup to debug modem problems. Then you can issue AT commands to the modem and attempt to dial the paging terminal of your paging service. When you connect successfully to a paging terminal that uses the TAP protocol, you should receive the ID= prompt, indicating the start of a successful TAP connection.
If you cannot log in successfully using AT commands, check modem hardware configuration such as DIP switches and RSC serial port settings.
Instead of using the rscadm command, you can connect the modem to one of the server's serial ports and use a UNIX utility such as tip to connect to the TAP paging terminal. This allows you to check the modem independent of RSC. If you can connect successfully using this method, you know you are using the correct paging terminal number. See the man pages for tip and stty for UNIX-level troubleshooting.
To check pager alerts, use the command rscadm send_event -c message.
This sends an alert message to pagers specified by RSC configuration.
Copyright © 2004, Sun Microsystems, Inc. All Rights Reserved.