Hayes Optima 144 Modem on the Advant Workstation
- How to install a Hayes Optima 144 Modem on the Advant Workstation
The HP reference manual for modem configuration and UNIX operation is 'Remote Access User's Guide' HP Part# B2355-90037. The 'cu' command is on pages 8-10 thru 8-15. Modem connections are reviewed on pages 4-16 thru 4-32.
- A cable must be made to the following wiring requirements. 25-pin male (modem)to 9-pin female (HP720) 81322320475664758229Read 'Remote User's Access Guide' manual for information on operation and setup of modems. Verify the modem is 'Hayes' compatible. Verify the proper cable is being used and is connected to the correct RS-232 port. Verify and/or create the correct modem device driver,peripheral devices, terminal and modems and modems.Creating device drivers should be done with the use of SAM. There are two serial ports on the back of the Advant station. One is labeled 'RS-232(A)' the other 'RS-232(B)'. The serial 'A' will have the SBM address of '4' and serial 'B' will have the address of '5'.Follow SAM's instruction and write down what device driver it created.
NOTE: Do not use the CCITT option in North America.
Then use the 'ls -l' command to verify the device drivers have been created.
The ls -l command should show the following devices as follows:
The X should be the number assigned by SAM as to the device listing in SAM. The Y is the serial port number, 4 is for port 'A' and 5 is for port 'B'.Next verify that the getty is running on the port and that it is in a pending state, To show this their should be an '?' in the tty field. If getty is not in a pending state, then hardware should be checked out. Verification is done by using the command ps.Type
If the getty is not running, you will have to edit the '/etc/inittab ' file and check for the getty process command in there. The /etc/inittab entry should look like this:or
Where ZZ is a 2 character id, nnnn is the baud rate and W is the run state. This number should be 234. If it is not, change it and save your file. To institute the changes on the system type ' init q '. Here is an example for port A at 9600 baud.Check again to see if the getty is running and a '?' is in the tty field. With the modem disconnected from the port and powered on, the DTR or TR light should be off. When modem is connected to the port, DTR or TR light should be on. Therefore, the port is setting DTR or TR, not the modem. If DTR or TR light remains on all the time, this indicates that the modem has DTR strapped high and the setting should be changed. Check the modem users manual for procedure on how to change the strapping. After the modem is connected to the port, perform another ps -ef l grep ttyd0 and verify that the getty is still in a pending state. If the getty has a port number in the tty field instead of the ?, then the modem has carrier detect (CD) strapped high. Check the modem users manual for procedure on how to change the strapping. The workstation is now configured for the modem connection. To configure the station for call out usage the file '/usr/lib/uucp/Devices' must be checked and have the following entries:If they are not there add them to the file. Now 'x' is the port number. The modem is to be configured as follows.
Connect a terminal to the modem, or use cu in direct connect mode. Hit 'AT' several times until it answers with 'OK'. (If you do not get an OK, check your cable, and watch the TD & RD lights. They should flicker.)
Enter the 'AT' commands like this:You can run all the commands in one single line or you can do them one at a time preceded by the AT command. You can use upper or lower case. You can delete spaces between parameters. It should answer with the OK every time.
Once you have entered all the parameters, do one last 'AT & W0 & Wl [return]' to save the parameters. You can verify your commands by entering 'AT & V' which will list the profiles stored in memory on the modem.
The modem is now setup.
NOTE: Settings that enable flow control, and data compression can be changed after successful operation of the modem is established. At the outset, it is advisable to disable data compression and flow control. For further information on modem configuration, please consult the modem manual and manufacturer.
NOTE Software flow control should NOT be used if you use or contemplate using UUCP, as it will interfere with the UUCP operation. Hardware flow control is supported only on certain HP-UX interfaces and requires a special device file setup.To test the call out ability use the following command:You should get a message saying that you are connected. Entering the 'AT' and return the modem should respond with 'OK' if not, check setup of modem, it may have echo turned off. If ok try to dial out:To exit the cu command environment type a tilda '~', followed by a period '.' and a
If you have to dial out using the '9' prefix use the '=' sign, it stops the dialling till another dial tone is detected.
NOTE The ABB Keyboard does NOT have the tilda key.
NOTE After you logon the HP will ask you for a terminal type. Use the 'Backspace' key to erase '(hpterm) and enter 'vt100'. This will set the term type to vt100
- I need to configure a modem