barcode dll for vb.net Adding a Modem in Software

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Solaris 10 works best with external Hayes-compatible modems, which are also supported by other operating systems such as Microsoft Windows. However, modems that require specific operating system support (such as so-called WinModems ), will not work with Solaris 10. In addition, internal modem cards are generally not supported by Solaris 10. While older modems tend to use external (but sometimes internal!) DIP switches, modern modems can be configured using software to set most of their key operational parameters. Modem access can be configured to allow inbound-only, outbound-only, and bidirectional access, which allows traffic in both directions, using a similar scheme. The following example considers the scenario of dial-out-only access. The modem should be connected to one of the system s serial ports (A or B) and switched on. The A and B serial ports map to the devices /dev/cua/a and /dev/cua/b, respectively.
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To test the modem, use the tip command:
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# tip hardwire
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where hardwire should be defined in /etc/remote, similar to
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hardwire:\ :dv=/dev/cua/a:br#19200:el=^C^S^Q^U^D:ie=%$:oe=^D:
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where 19,200 bps is the connection speed between the modem and the serial port. In addition, /etc/remote should have a connection string associated with each modem that s connected to the system. For example, the string
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cua1:dv=/dev/cua/a:p8:br#19200
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specifies that 19,200 bps is the connection speed between the modem and the serial port, with 8-bit transmission and with no parity enabled. To use this entry specifically, you would use the command
# tip cua1
If the message
connected
appears on your terminal, the system is able to communicate successfully with the modem. For Hayes-compatible modems, command strings can be entered directly like this:
ATE1V1
If you see ok , the modem is communicating as expected and can be configured to run PPP.
Setting Up PPP
The first step in configuring PPP is to insert appropriate configuration information in /etc/ppp/options. The following options are the most commonly used: <tty_name> <speed> Name of the terminal device to use for communication.
Speed at which to transmit data.
auth Specifies that authentication is required (noauth specifies that no authentication is required).
Part V:
Networking
callback Requests a callback from the remote server. Useful for saving on long-distance charges! connect or init Specifies the chat script to configure line communications. mru Sets a maximum receive unit (MRU) value that specifies a limit on the packet size transmitted by the server. mtu Sets a maximum transmission unit (MTU) value that specifies a limit on the packet size transmitted by the client. Other options may be required, especially for authentication, but using these options is generally sufficient to make a connection. For further information, you should consult Celeste Stokely s PPP guide: http://www.stokely.com/unix.serial.port.resources/ppp .slip.html.
Examples
The following examples demonstrate how to set up modems and Internet access.
Using ttymon
The ttymon port monitor is managed by the ttyadm command. ttymon is designed to monitor requests from ports to allow remote access to the system. ttymon operates continually, spawning child processes when appropriate in order to service requests, which are sequentially numbered (for example, ttymon1, ttymon2, and so forth). The most common request for terminals is probably for an interactive login; thus, /usr/bin/ login is requested. The sacadm command can be used to list all current ttymon processes:
# sacadm PMTAG ttymon1 ttymon2 ttymon3 -l PMTYPE ttymon ttymon ttymon
FLGS -
RCNT 2 2 2
STATUS ENABLED ENABLED ENABLED
COMMAND /usr/lib/saf/ttymon #ttymon1 /usr/lib/saf/ttymon #ttymon2 /usr/lib/saf/ttymon #ttymon3
To view the services currently being provided through a particular monitor, you can use the pmadm command for each monitor process:
# pmadm -l -p ttymon2 PMTAG PMTYPE SVCTAG ttymon2 ttymon 11 /usr/bin/login ttymon2 ttymon 12 /usr/bin/login ttymon2 ttymon 13 /usr/bin/login ttymon2 ttymon 14 /usr/bin/login -
FLGS ID <PMSPECIFIC> u root /dev/term/11 9600 - login: -tvi925 u root /dev/term/12 9600 - login: -tvi925 u root /dev/term/13 9600 - login: -tvi925 u root /dev/term/14 9600 - login: -tvi925
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Here, you can see that ports /dev/term/11 through /dev/term/14 are being serviced using the login service.
Connecting to an ISP
Once you have set up the /etc/ppp/options file, you can make a connection from the command line. For example, to connect using a 56 Kbps modem using the chat script emergency1.chat, the following command will establish a connection without authentication:
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