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Smart Link Soft Modem for Linux
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-------------------------------
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This is Smart Link Soft Modem for Linux version 2.9. It provides
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full-featured 56K Voice Fax Modem.
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This is implemented as generic application (slmodemd) and set of
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hardware specific kernel-space drivers (slamr, slusb).
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ALSA modem drivers may be used instead of proprietary ones (see ALSA mode).
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Modem: V.92, V.90, V.34, V.32bis, V.32, V.23, V.22, V.21, Bell 103/212.
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Compression: V.44, V.42bis.
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Voice: V253 like modem.
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Multiple modems are supported.
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HAMR5600 based AMR/CNR/MDC/ACR modem cards on the following Southbridge
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- Intel ICH0,ICH2, ICH3, ICH4
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- Via 686A, 686B, 8231, 8233
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SmartPCI56/561/562/563 based PCI modem cards.
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SmartUSB56 based USB modem.
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CPU: Intel Pentium II, Celron. AMD K6, Cyrix 500MHz or higher.
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OS: Linux 2.4. You need the kernel header files at least (or full kernel
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source tree) installed and configured.
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Linux 2.6. You need the full kernel source tree installed and configured.
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Note: Most Linux Distributions have 'ready to use' kernel source package -
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be sure that this is installed.
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1. Unpack tar.gz package file:
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$ gzip -dc slmodem-2.9.X.tar.gz | tar xf -
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2. 'cd' to package directory:
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3. Review and edit 'Makefile' (if need):
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In many cases you will need to correct path to your local kernel
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KERNEL_DIR=/path/to/linux
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Default KERNEL_DIR is '/lib/modules/<kerne-version>/build'. Many Linux
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Distributions use directory '/usr/src/linux-<version>' also.
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Note: If you are using Linux kernel 2.4, only header files should be
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available for build in $(KERNEL_DIR)/include
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Another way to pass right value KERNEL_DIR is to use command line
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parameter while running 'make':
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$ make KERNEL_DIR=/path/to/linux ...
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4. Run 'make' command to compile package:
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5. Install. As 'root' user run:
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- application 'slmodemd' under '/usr/sbin' directory
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- hardware specific drivers (kernel modules) 'slamr' and 'slusb'
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under conventional kernel modules directory
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- character device nodes '/dev/slamr0-3' with major number 212
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(for pci modems) and '/dev/slusb0-3' with major number 213
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- config modules for autoloading (by editing file '/etc/modules.conf')
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(only with 2.4 kernels)
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6. Config modem country.
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Use AT+GCI=<T.35 country code> command to setup country.
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Also you can setup default modem country by passing command line
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parameter '--country=MY_COUNTRY' to program 'slmodemd'.
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See output of 'slmodemd --countrylist' for a list of supported
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country names and T.35 country codes (see also 'slmodemd --help').
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Note: Command ATI7 shows currently installed country setting.
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In package directory just type:
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After successful installation and configuration:
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1. Load modem driver.
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Load your modem hardware specific kernel module:
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if you are using AMR/CNR/PCI modem, or
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if you are using SmartUSB56 Modem.
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Note: this will be done automatically when modules were
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configured for 'loading on demand'
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Note: this is safe to load both 'alamr' and 'slusb' modules.
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2. Run soft modem application.
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# /usr/sbin/slmodemd [options] <device_name>
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Where device name is appropriate device node for your modem
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(look at output of 'dmesg' command).
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Run '/usr/sbin/slmodemd --help' for details.
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# /usr/sbin/slmodemd --country=USA /dev/slamr0
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, or for SmartUSB56 Modems:
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# /usr/sbin/slmodemd --country=ITALY /dev/slusb0
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When 'slmodemd' is running this creates PTY (pseudo-terminal) to
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emulate modem port device, also this creates symbolic link
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like '/dev/ttySL0' (shown at startup).
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Config your application to use this link '/dev/ttySL0' (or PTY node
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itself) as modem port.
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Note: Some application want 'to know' that they are working with
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pseudo-terminal and may require additional configurations.
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Known application notes:
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- 'wvdial' requires option 'Carrier Check = no' in config file
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- some versions of 'kppp' may not work properly with devices named
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like '/dev/ttySL0'. To workaround this you may create symbolic link
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'/dev/modem' ( # ln -s /dev/ttySL0 /dev/modem ) and use this link
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as modem device with 'kppp'
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4. Startup automation.
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There are examples of startup scripts in 'scripts' directory.
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ALSA has the built-in modem drivers included in 'alsa-driver' >= 1.0.2
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and in Linux kernel >= 2.6.5. Currently there is 'intel8x0m' (snd-intel8x0m)
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modem driver, which supports ICH based AC97 modems (MC97).
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1. Configure your kernel and enable ALSA and ICH based modem support
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( 'Device Drivers' -> 'Sound' -> 'Advanced Linux Sound Architecture' ->
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'PCI devices' -> 'Intel i8x0/MX440; AMD768/8111 modems' ) .
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2. Build and install kernel and modules as usual (make , make modules_install,
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etc.). ICH modem driver modem module name is 'snd-intel8x0m'
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(if was configured as module).
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3. Build application 'slmodemd' with ALSA support. For this in
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$ make SUPPORT_ALSA=1
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This will build 'slmodemd' with ALSA support. If compilation is failed
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review Makefile (near ALSA_SUPPORT condition) and define right library
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4. Use option '--alsa' when running 'slmodemd' and ALSA conventional
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device name ('hw:0' or 'hw:1' for instance). If modem support in
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the kernel was enabled as module module 'snd-intel8x0m' should be loaded.
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When using ALSA modem driver you don't need to load other modules ('slamr').
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If you get an error message during installation/configuration or loading
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the modules try to see it in FAQ file.
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Please report the problem to your modem provider or to us
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(linux-support@smlink.com).
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Please send any feedbacks to Smart Link. See the Smart Link
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web site for contact information (www.smlink.com) or to
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linux-support@smlink.com.
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