diff --git a/Manuals/Tcpi-ug/Configurations/Ppp/modem-install.docbook b/Manuals/Tcpi-ug/Configurations/Ppp/modem-install.docbook index 3086741..6bb36a6 100644 --- a/Manuals/Tcpi-ug/Configurations/Ppp/modem-install.docbook +++ b/Manuals/Tcpi-ug/Configurations/Ppp/modem-install.docbook @@ -1,6 +1,10 @@ - + - Installing Modem Device + The Modem Device + + + + Installation The modem device installation consists on attacthing the modem @@ -54,11 +58,229 @@ Bus 004 Device 001: ID 0000:0000 At this point, your computer should be able of responding to incoming calls but cannot realize outgoing calls, yet. To administer the way incoming calls are attended in this - computer, read . On the other hand, to realize outgoing calls from this computer, you need to specify the server information you want to establish connection to, as described in . + + + + Configuration + + + Once the modem hardware has been installed in the computer, it + is necessary to determine what device location the operating + system assigned to it, so applications like + chat be able to know which device + to talk to. This configuration process can be realized + through the wvdialconf command, distributed + with the wvdial package. + + + + Another way to configure modems installed in your computer is + through the graphical interface provided by + system-config-network command. This + interface may result specially useful when you need to + configure your computer to establish Modem connections to + remote Internet Service Providers (ISPs). The interface + provided by system-config-network command + uses the same configuration file that + wvdialconf command does (e.g., + /etc/wvdial.conf), however, there are + some differences in the way these commands create + configuration files that we need to be aware of. + + + + This section describes how you could use the + wvdialconf and + system-config-network commands to configure + the modem installed in your computer, as well as possible + issues you might face if these two commands are arbitrarily + combined one another. + + + + The <command>wvdialconf</command> Command + + + The wvdialconf automatically detects the + location the operating system assigned to your modem, its + maximum baud rate, a good initialization string for it, and + generates/updates the wvdial configuration + file (/etc/wvdial.conf) the + wvdial command needs to work. To set the + modem configuration through wvdialconf + command, run the command as follows: + + + sudo /usr/bin/wvdialconf /etc/wvdial.conf + + + This command will produce an output like the following: + + + +Scanning your serial ports for a modem. + +ttyS0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud +ttyS0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud +ttyS0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. +Port Scan<*1>: S1 S2 S3 +WvModem<*1>: Cannot get information for serial port. +ttyACM0<*1>: ATQ0 V1 E1 -- OK +ttyACM0<*1>: ATQ0 V1 E1 Z -- OK +ttyACM0<*1>: ATQ0 V1 E1 S0=0 -- OK +ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK +ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK +ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK +ttyACM0<*1>: Modem Identifier: ATI -- LT V.90 1.0 MT5634ZBA-USB +Data/Fax Modem (Dual Config) Version 5.18e +ttyACM0<*1>: Speed 4800: AT -- OK +ttyACM0<*1>: Speed 9600: AT -- OK +ttyACM0<*1>: Speed 19200: AT -- OK +ttyACM0<*1>: Speed 38400: AT -- OK +ttyACM0<*1>: Speed 57600: AT -- OK +ttyACM0<*1>: Speed 115200: AT -- OK +ttyACM0<*1>: Speed 230400: AT -- OK +ttyACM0<*1>: Speed 460800: AT -- OK +ttyACM0<*1>: Max speed is 460800; that should be safe. +ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK + +Found an USB modem on /dev/ttyACM0. +Modem configuration written to /etc/wvdial.conf. +ttyACM0<Info>: Speed 460800; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0" + + + + and a wvdial configuration file like the + following: + + + +[Dialer Defaults] +Modem = /dev/ttyACM0 +Baud = 460800 +Init1 = ATZ +Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 +ISDN = 0 +Modem Type = USB Modem +; Phone = <Target Phone Number> +; Username = <Your Login Name> +; Password = <Your Password> + + + + + It is possible to configure the same computer to act both as + server (i.e., to receive incoming calls from clients) and + client (i.e., to realize outgoing calls to servers). However, + be aware that only one of these connections can be established + at a time. + + + + + + + The <command>system-config-network</command> Command + + + The interface provided by + system-config-network command doesn't + detect the configuration intially created by + wvdialconf command. In fact, if you set a + new (modem) hardware configuration through it, any + configuration previously created by + wvdailconf command will be lost. On the + other hand, if you firstly generate the configuration file + using the interface provided by + system-config-network command and later run + the wvdialconf command over it, you will + end up having two similar configuration settings under + different definitions stored in the same configuration file. + + + + + The wvdial command doesn't understand the + configuration file produced by + system-config-network command, even both + wvdialconf and + system-config-network commands use the same + configuration syntax to create the configuration file. + + + + + Inside the /etc/wvdial.conf configuration + file, the interface provided by + system-config-network identifies default + modem configurations through the [Modem0] line, + while the wvdialconf command does the same + through the [Dialer Defaults] line. Something + interesting about the configuration file created by + system-config-network is that it is + possible to create several ISP configurations that reuse + default settings in the [Modem0] section. For + example, consider the following example: + + + +[Modem0] +Modem = /dev/ttyACM0 +Baud = 460800 +SetVolume = 2 +Dial Command = ATDT +Init1 = ATZ +Init3 = ATM1L2 +FlowControl = CRTSCTS +[Dialer Vispa_Internet] +Username = signup +Password = rebel +Phone = 08453080125 +Stupid Mode = 1 +Init1 = ATZ +Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 +Inherits = Modem0 + + + + + The interface provided by + system-config-network command doesn't + provide modem detection (as wvdialconf + command would do) and uses the /dev/modem + as default location. This location doesn't exists by default, + so whatever configuration you set from it will not work. To + solve this issue, chose one of the following workarounds: + + + + + Replace the /dev/modem location by that + one wvdialconf found when the interface + provided by system-config-network ask you + to enter the modem device. + + + + + Create /dev/modem location as a symbolic + link to that location found by wvdialconf + command. For example: + sudo /bin/ln -s /dev/ttyACM0 /dev/modem + + + + + + + + +