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diff --git a/Documentation/telephony/ixj.txt b/Documentation/telephony/ixj.txt new file mode 100644 index 00000000000..621024fd3a1 --- /dev/null +++ b/Documentation/telephony/ixj.txt @@ -0,0 +1,406 @@ +Linux Quicknet-Drivers-Howto +Quicknet Technologies, Inc. (www.quicknet.net) +Version 0.3.4 December 18, 1999 + +1.0 Introduction + +This document describes the first GPL release version of the Linux +driver for the Quicknet Internet PhoneJACK and Internet LineJACK +cards. More information about these cards is available at +www.quicknet.net. The driver version discussed in this document is +0.3.4. + +These cards offer nice telco style interfaces to use your standard +telephone/key system/PBX as the user interface for VoIP applications. +The Internet LineJACK also offers PSTN connectivity for a single line +Internet to PSTN gateway. Of course, you can add more than one card +to a system to obtain multi-line functionality. At this time, the +driver supports the POTS port on both the Internet PhoneJACK and the +Internet LineJACK, but the PSTN port on the latter card is not yet +supported. + +This document, and the drivers for the cards, are intended for a +limited audience that includes technically capable programmers who +would like to experiment with Quicknet cards. The drivers are +considered in ALPHA status and are not yet considered stable enough +for general, widespread use in an unlimited audience. + +That's worth saying again: + +THE LINUX DRIVERS FOR QUICKNET CARDS ARE PRESENTLY IN A ALPHA STATE +AND SHOULD NOT BE CONSIDERED AS READY FOR NORMAL WIDESPREAD USE. + +They are released early in the spirit of Internet development and to +make this technology available to innovators who would benefit from +early exposure. + +When we promote the device driver to "beta" level it will be +considered ready for non-programmer, non-technical users. Until then, +please be aware that these drivers may not be stable and may affect +the performance of your system. + + +1.1 Latest Additions/Improvements + +The 0.3.4 version of the driver is the first GPL release. Several +features had to be removed from the prior binary only module, mostly +for reasons of Intellectual Property rights. We can't release +information that is not ours - so certain aspects of the driver had to +be removed to protect the rights of others. + +Specifically, very old Internet PhoneJACK cards have non-standard +G.723.1 codecs (due to the early nature of the DSPs in those days). +The auto-conversion code to bring those cards into compliance with +todays standards is available as a binary only module to those people +needing it. If you bought your card after 1997 or so, you are OK - +it's only the very old cards that are affected. + +Also, the code to download G.728/G.729/G.729a codecs to the DSP is +available as a binary only module as well. This IP is not ours to +release. + +Hooks are built into the GPL driver to allow it to work with other +companion modules that are completely separate from this module. + +1.2 Copyright, Trademarks, Disclaimer, & Credits + +Copyright + +Copyright (c) 1999 Quicknet Technologies, Inc. Permission is granted +to freely copy and distribute this document provided you preserve it +in its original form. For corrections and minor changes contact the +maintainer at linux@quicknet.net. + +Trademarks + +Internet PhoneJACK and Internet LineJACK are registered trademarks of +Quicknet Technologies, Inc. + +Disclaimer + +Much of the info in this HOWTO is early information released by +Quicknet Technologies, Inc. for the express purpose of allowing early +testing and use of the Linux drivers developed for their products. +While every attempt has been made to be thorough, complete and +accurate, the information contained here may be unreliable and there +are likely a number of errors in this document. Please let the +maintainer know about them. Since this is free documentation, it +should be obvious that neither I nor previous authors can be held +legally responsible for any errors. + +Credits + +This HOWTO was written by: + + Greg Herlein <gherlein@quicknet.net> + Ed Okerson <eokerson@quicknet.net> + +1.3 Future Plans: You Can Help + +Please let the maintainer know of any errors in facts, opinions, +logic, spelling, grammar, clarity, links, etc. But first, if the date +is over a month old, check to see that you have the latest +version. Please send any info that you think belongs in this document. + +You can also contribute code and/or bug-fixes for the sample +applications. + + +1.4 Where to get things + +You can download the latest versions of the driver from: + +http://www.quicknet.net/develop.htm + +You can download the latest version of this document from: + +http://www.quicknet.net/develop.htm + + +1.5 Mailing List + +Quicknet operates a mailing list to provide a public forum on using +these drivers. + +To subscribe to the linux-sdk mailing list, send an email to: + + majordomo@linux.quicknet.net + +In the body of the email, type: + + subscribe linux-sdk <your-email-address> + +Please delete any signature block that you would normally add to the +bottom of your email - it tends to confuse majordomo. + +To send mail to the list, address your mail to + + linux-sdk@linux.quicknet.net + +Your message will go out to everyone on the list. + +To unsubscribe to the linux-sdk mailing list, send an email to: + + majordomo@linux.quicknet.net + +In the body of the email, type: + + unsubscribe linux-sdk <your-email-address> + + + +2.0 Requirements + +2.1 Quicknet Card(s) + +You will need at least one Internet PhoneJACK or Internet LineJACK +cards. These are ISA or PCI bus devices that use Plug-n-Play for +configuration, and use no IRQs. The driver will support up to 16 +cards in any one system, of any mix between the two types. + +Note that you will need two cards to do any useful testing alone, since +you will need a card on both ends of the connection. Of course, if +you are doing collaborative work, perhaps your friends or coworkers +have cards too. If not, we'll gladly sell them some! + + +2.2 ISAPNP + +Since the Quicknet cards are Plug-n-Play devices, you will need the +isapnp tools package to configure the cards, or you can use the isapnp +module to autoconfigure them. The former package probably came with +your Linux distribution. Documentation on this package is available +online at: + +http://mailer.wiwi.uni-marburg.de/linux/LDP/HOWTO/Plug-and-Play-HOWTO.html + +The isapnp autoconfiguration is available on the Quicknet website at: + + http://www.quicknet.net/develop.htm + +though it may be in the kernel by the time you read this. + + +3.0 Card Configuration + +If you did not get your drivers as part of the linux kernel, do the +following to install them: + + a. untar the distribution file. We use the following command: + tar -xvzf ixj-0.x.x.tgz + +This creates a subdirectory holding all the necessary files. Go to that +subdirectory. + + b. run the "ixj_dev_create" script to remove any stray device +files left in the /dev directory, and to create the new officially +designated device files. Note that the old devices were called +/dev/ixj, and the new method uses /dev/phone. + + c. type "make;make install" - this will compile and install the +module. + + d. type "depmod -av" to rebuild all your kernel version dependencies. + + e. if you are using the isapnp module to configure the cards + automatically, then skip to step f. Otherwise, ensure that you + have run the isapnp configuration utility to properly configure + the cards. + + e1. The Internet PhoneJACK has one configuration register that + requires 16 IO ports. The Internet LineJACK card has two + configuration registers and isapnp reports that IO 0 + requires 16 IO ports and IO 1 requires 8. The Quicknet + driver assumes that these registers are configured to be + contiguous, i.e. if IO 0 is set to 0x340 then IO 1 should + be set to 0x350. + + Make sure that none of the cards overlap if you have + multiple cards in the system. + + If you are new to the isapnp tools, you can jumpstart + yourself by doing the following: + + e2. go to the /etc directory and run pnpdump to get a blank + isapnp.conf file. + + pnpdump > /etc/isapnp.conf + + e3. edit the /etc/isapnp.conf file to set the IO warnings and + the register IO addresses. The IO warnings means that you + should find the line in the file that looks like this: + + (CONFLICT (IO FATAL)(IRQ FATAL)(DMA FATAL)(MEM FATAL)) # or WARNING + + and you should edit the line to look like this: + + (CONFLICT (IO WARNING)(IRQ FATAL)(DMA FATAL)(MEM FATAL)) # + or WARNING + + The next step is to set the IO port addresses. The issue + here is that isapnp does not identify all of the ports out + there. Specifically any device that does not have a driver + or module loaded by Linux will not be registered. This + includes older sound cards and network cards. We have + found that the IO port 0x300 is often used even though + isapnp claims that no-one is using those ports. We + recommend that for a single card installation that port + 0x340 (and 0x350) be used. The IO port line should change + from this: + + (IO 0 (SIZE 16) (BASE 0x0300) (CHECK)) + + to this: + + (IO 0 (SIZE 16) (BASE 0x0340) ) + + e4. if you have multiple Quicknet cards, make sure that you do + not have any overlaps. Be especially careful if you are + mixing Internet PhoneJACK and Internet LineJACK cards in + the same system. In these cases we recommend moving the + IO port addresses to the 0x400 block. Please note that on + a few machines the 0x400 series are used. Feel free to + experiment with other addresses. Our cards have been + proven to work using IO addresses of up to 0xFF0. + + e5. the last step is to uncomment the activation line so the + drivers will be associated with the port. This means the + line (immediately below) the IO line should go from this: + + # (ACT Y) + + to this: + + (ACT Y) + + Once you have finished editing the isapnp.conf file you + must submit it into the pnp driverconfigure the cards. + This is done using the following command: + + isapnp isapnp.conf + + If this works you should see a line that identifies the + Quicknet device, the IO port(s) chosen, and a message + "Enabled OK". + + f. if you are loading the module by hand, use insmod. An example +of this would look like this: + + insmod phonedev + insmod ixj dspio=0x320,0x310 xio=0,0x330 + +Then verify the module loaded by running lsmod. If you are not using a +module that matches your kernel version, you may need to "force" the +load using the -f option in the insmod command. + + insmod phonedev + insmod -f ixj dspio=0x320,0x310 xio=0,0x330 + + +If you are using isapnp to autoconfigure your card, then you do NOT +need any of the above, though you need to use depmod to load the +driver, like this: + + depmod ixj + +which will result in the needed drivers getting loaded automatically. + + g. if you are planning on using kerneld to automatically load the +module for you, then you need to edit /etc/conf.modules and add the +following lines: + + options ixj dspio=0x340 xio=0x330 ixjdebug=0 + +If you do this, then when you execute an application that uses the +module kerneld will load the module for you. Note that to do this, +you need to have your kernel set to support kerneld. You can check +for this by looking at /usr/src/linux/.config and you should see this: + + # Loadable module support + # + <snip> + CONFIG_KMOD=y + + h. if you want non-root users to be able to read and write to the +ixj devices (this is a good idea!) you should do the following: + + - decide upon a group name to use and create that group if + needed. Add the user names to that group that you wish to + have access to the device. For example, we typically will + create a group named "ixj" in /etc/group and add all users + to that group that we want to run software that can use the + ixjX devices. + + - change the permissions on the device files, like this: + + chgrp ixj /dev/ixj* + chmod 660 /dev/ixj* + +Once this is done, then non-root users should be able to use the +devices. If you have enabled autoloading of modules, then the user +should be able to open the device and have the module loaded +automatically for them. + + +4.0 Driver Installation problems. + +We have tested these drivers on the 2.2.9, 2.2.10, 2.2.12, and 2.2.13 kernels +and in all cases have eventually been able to get the drivers to load and +run. We have found four types of problems that prevent this from happening. +The problems and solutions are: + + a. A step was missed in the installation. Go back and use section 3 +as a checklist. Many people miss running the ixj_dev_create script and thus +never load the device names into the filesystem. + + b. The kernel is inconsistently linked. We have found this problem in +the Out Of the Box installation of several distributions. The symptoms +are that neither driver will load, and that the unknown symbols include "jiffy" +and "kmalloc". The solution is to recompile both the kernel and the +modules. The command string for the final compile looks like this: + + In the kernel directory: + 1. cp .config /tmp + 2. make mrproper + 3. cp /tmp/.config . + 4. make clean;make bzImage;make modules;make modules_install + +This rebuilds both the kernel and all the modules and makes sure they all +have the same linkages. This generally solves the problem once the new +kernel is installed and the system rebooted. + + c. The kernel has been patched, then unpatched. This happens when +someone decides to use an earlier kernel after they load a later kernel. +The symptoms are proceeding through all three above steps and still not +being able to load the driver. What has happened is that the generated +header files are out of sync with the kernel itself. The solution is +to recompile (again) using "make mrproper". This will remove and then +regenerate all the necessary header files. Once this is done, then you +need to install and reboot the kernel. We have not seen any problem +loading one of our drivers after this treatment. + +5.0 Known Limitations + +We cannot currently play "dial-tone" and listen for DTMF digits at the +same time using the ISA PhoneJACK. This is a bug in the 8020 DSP chip +used on that product. All other Quicknet products function normally +in this regard. We have a work-around, but it's not done yet. Until +then, if you want dial-tone, you can always play a recorded dial-tone +sound into the audio until you have gathered the DTMF digits. + + + + + + + + + + + + + + + + + |