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diff --git a/Documentation/isdn/README.sc b/Documentation/isdn/README.sc new file mode 100644 index 00000000000..1153cd92605 --- /dev/null +++ b/Documentation/isdn/README.sc @@ -0,0 +1,281 @@ +Welcome to Beta Release 2 of the combination ISDN driver for SpellCaster's +ISA ISDN adapters. Please note this release 2 includes support for the +DataCommute/BRI and TeleCommute/BRI adapters only and any other use is +guaranteed to fail. If you have a DataCommute/PRI installed in the test +computer, we recommend removing it as it will be detected but will not +be usable. To see what we have done to Beta Release 2, see section 3. + +Speaking of guarantees, THIS IS BETA SOFTWARE and as such contains +bugs and defects either known or unknown. Use this software at your own +risk. There is NO SUPPORT for this software. Some help may be available +through the web site or the mailing list but such support is totally at +our own option and without warranty. If you choose to assume all and +total risk by using this driver, we encourage you to join the beta +mailing list. + +To join the Linux beta mailing list, send a message to: +majordomo@spellcast.com with the words "subscribe linux-beta" as the only +contents of the message. Do not include a signature. If you choose to +remove yourself from this list at a later date, send another message to +the same address with the words "unsubscribe linux-beta" as its only +contents. + +TABLE OF CONTENTS +----------------- + 1. Introduction + 1.1 What is ISDN4Linux? + 1.2 What is different between this driver and previous drivers? + 1.3 How do I setup my system with the correct software to use + this driver release? + + 2. Basic Operations + 2.1 Unpacking and installing the driver + 2.2 Read the man pages!!! + 2.3 Installing the driver + 2.4 Removing the driver + 2.5 What to do if it doesn't load + 2.6 How to setup ISDN4Linux with the driver + + 3. Beta Change Summaries and Miscellaneous Notes + +1. Introduction +--------------- + +The revision 2 Linux driver for SpellCaster ISA ISDN adapters is built +upon ISDN4Linux available separately or as included in Linux 2.0 and later. +The driver will support a maximum of 4 adapters in any one system of any +type including DataCommute/BRI, DataCommute/PRI and TeleCommute/BRI for a +maximum of 92 channels for host. The driver is supplied as a module in +source form and needs to be complied before it can be used. It has been +tested on Linux 2.0.20. + +1.1 What Is ISDN4Linux + +ISDN4Linux is a driver and set of tools used to access and use ISDN devices +on a Linux platform in a common and standard way. It supports HDLC and PPP +protocols and offers channel bundling and MLPPP support. To use ISDN4Linux +you need to configure your kernel for ISDN support and get the ISDN4Linux +tool kit from our web site. + +ISDN4Linux creates a channel pool from all of the available ISDN channels +and therefore can function across adapters. When an ISDN4Linux compliant +driver (such as ours) is loaded, all of the channels go into a pool and +are used on a first-come first-served basis. In addition, individual +channels can be specifically bound to particular interfaces. + +1.2 What is different between this driver and previous drivers? + +The revision 2 driver besides adopting the ISDN4Linux architecture has many +subtle and not so subtle functional differences from previous releases. These +include: + - More efficient shared memory management combined with a simpler + configuration. All adapters now use only 16Kbytes of shared RAM + versus between 16K and 64K. New methods for using the shared RAM + allow us to utilize all of the available RAM on the adapter through + only one 16K page. + - Better detection of available upper memory. The probing routines + have been improved to better detect available shared RAM pages and + used pages are now locked. + - Decreased loading time and a wider range of I/O ports probed. + We have significantly reduced the amount of time it takes to load + the driver and at the same time doubled the number of I/O ports + probed increasing the likelihood of finding an adapter. + - We now support all ISA adapter models with a single driver instead + of separate drivers for each model. The revision 2 driver supports + the DataCommute/BRI, DataCommute/PRI and TeleCommute/BRI in any + combination up to a maximum of four adapters per system. + - On board PPP protocol support has been removed in favour of the + sync-PPP support used in ISDN4Linux. This means more control of + the protocol parameters, faster negotiation time and a more + familiar interface. + +1.3 How do I setup my system with the correct software to use + this driver release? + +Before you can compile, install and use the SpellCaster ISA ISDN driver, you +must ensure that the following software is installed, configured and running: + + - Linux kernel 2.0.20 or later with the required init and ps + versions. Please see your distribution vendor for the correct + utility packages. The latest kernel is available from + ftp://sunsite.unc.edu/pub/Linux/kernel/v2.0/ + + - The latest modules package (modules-2.0.0.tar.gz) from + ftp://sunsite.unc.edu/pub/Linux/kernel/modules-2.0.0.tar.gz + + - The ISDN4Linux tools available from + ftp://ftp.franken.de/pub/isdn4linux/v2.0/isdn4k-utils-2.0.tar.gz + This package may fail to compile for you so you can alternatively + get a pre-compiled version from + ftp://ftp.spellcast.com/pub/drivers/isdn4linux/isdn4k-bin-2.0.tar.gz + + +2. Basic Operations +------------------- + +2.1 Unpacking and installing the driver + + 1. As root, create a directory in a convenient place. We suggest + /usr/src/spellcaster. + + 2. Unpack the archive with : + tar xzf sc-n.nn.tar.gz -C /usr/src/spellcaster + + 3. Change directory to /usr/src/spellcaster + + 4. Read the README and RELNOTES files. + + 5. Run 'make' and if all goes well, run 'make install'. + +2.2 Read the man pages!!! + +Make sure you read the scctrl(8) and sc(4) manual pages before continuing +any further. Type 'man 8 scctrl' and 'man 4 sc'. + +2.3 Installing the driver + +To install the driver, type '/sbin/insmod sc' as root. sc(4) details options +you can specify but you shouldn't need to use any unless this doesn't work. + +Make sure the driver loaded and detected all of the adapters by typing +'dmesg'. + +The driver can be configured so that it is loaded upon startup. To do this, +edit the file "/etc/modules/'uname -f'/'uname -v'" and insert the driver name +"sc" into this file. + +2.4 Removing the driver + +To remove the driver, delete any interfaces that may exist (see isdnctrl(8) +for more on this) and then type '/sbin/rmmod sc'. + +2.5 What to do if it doesn't load + +If, when you try to install the driver, you get a message mentioning +'register_isdn' then you do not have the ISDN4Linux system installed. Please +make sure that ISDN support is configured in the kernel. + +If you get a message that says 'initialization of sc failed', then the +driver failed to detect an adapter or failed to find resources needed such +as a free IRQ line or shared memory segment. If you are sure there are free +resources available, use the insmod options detailed in sc(4) to override +the probing function. + +Upon testing, the following problem was noted, the driver would load without +problems, but the board would not respond beyond that point. When a check was +done with 'cat /proc/interrupts' the interrupt count for sc was 0. In the event +of this problem, change the BIOS settings so that the interrupts in question are +reserved for ISA use only. + + +2.6 How to setup ISDN4Linux with the driver + +There are three main configurations which you can use with the driver: + +A) Basic HDLC connection +B) PPP connection +C) MLPPP connection + +It should be mentioned here that you may also use a tty connection if you +desire. The Documentation directory of the isdn4linux subsystem offers good +documentation on this feature. + +A) 10 steps to the establishment of a basic HDLC connection +----------------------------------------------------------- + +- please open the isdn-hdlc file in the examples directory and follow along... + + This file is a script used to configure a BRI ISDN TA to establish a + basic HDLC connection between its two channels. Two network + interfaces are created and two routes added between the channels. + + i) using the isdnctrl utility, add an interface with "addif" and + name it "isdn0" + ii) add the outgoing and inbound telephone numbers + iii) set the Layer 2 protocol to hdlc + iv) set the eaz of the interface to be the phone number of that + specific channel + v) to turn the callback features off, set the callback to "off" and + the callback delay (cbdelay) to 0. + vi) the hangup timeout can be set to a specified number of seconds + vii) the hangup upon incoming call can be set on or off + viii) use the ifconfig command to bring up the network interface with + a specific IP address and point to point address + ix) add a route to the IP address through the isdn0 interface + x) a ping should result in the establishment of the connection + + +B) Establishment of a PPP connection +------------------------------------ + +- please open the isdn-ppp file in the examples directory and follow along... + + This file is a script used to configure a BRI ISDN TA to establish a + PPP connection between the two channels. The file is almost + identical to the HDLC connection example except that the packet + encapsulation type has to be set. + + use the same procedure as in the HDLC connection from steps i) to + iii) then, after the Layer 2 protocol is set, set the encapsulation + "encap" to syncppp. With this done, the rest of the steps, iv) to x) + can be followed from above. + + Then, the ipppd (ippp daemon) must be setup: + + xi) use the ipppd function found in /sbin/ipppd to set the following: + xii) take out (minus) VJ compression and bsd compression + xiii) set the mru size to 2000 + xiv) link the two /dev interfaces to the daemon + +NOTE: A "*" in the inbound telephone number specifies that a call can be +accepted on any number. + +C) Establishment of a MLPPP connection +-------------------------------------- + +- please open the isdn-mppp file in the examples directory and follow along... + + This file is a script used to configure a BRI ISDN TA to accept a + Multi Link PPP connection. + + i) using the isdnctrl utility, add an interface with "addif" and + name it "ippp0" + ii) add the inbound telephone number + iii) set the Layer 2 protocol to hdlc and the Layer 3 protocol to + trans (transparent) + iv) set the packet encapsulation to syncppp + v) set the eaz of the interface to be the phone number of that + specific channel + vi) to turn the callback features off, set the callback to "off" and + the callback delay (cbdelay) to 0. + vi) the hangup timeout can be set to a specified number of seconds + vii) the hangup upon incoming call can be set on or off + viii) add a slave interface and name it "ippp32" for example + ix) set the similar parameters for the ippp32 interface + x) use the ifconfig command to bring-up the ippp0 interface with a + specific IP address and point to point address + xi) add a route to the IP address through the ippp0 interface + xii) use the ipppd function found in /sbin/ipppd to set the following: + xiii) take out (minus) bsd compression + xiv) set the mru size to 2000 + xv) add (+) the multi-link function "+mp" + xvi) link the two /dev interfaces to the daemon + +NOTE: To use the MLPPP connection to dial OUT to a MLPPP connection, change +the inbound telephone numbers to the outgoing telephone numbers of the MLPPP +host. + + +3. Beta Change Summaries and Miscellaneous Notes +------------------------------------------------ +When using the "scctrl" utility to upload firmware revisions on the board, +please note that the byte count displayed at the end of the operation may be +different from the total number of bytes in the "dcbfwn.nn.sr" file. Please +disregard the displayed byte count. + +It was noted that in Beta Release 1, the module would fail to load and result +in a segmentation fault when 'insmod'ed. This problem was created when one of +the isdn4linux parameters, (isdn_ctrl, data field) was filled in. In some +cases, this data field was NULL, and was left unchecked, so when it was +referenced... segv. The bug has been fixed around line 63-68 of event.c. + |