Beijing Paradise BBS Backup

home *** CD-ROM | disk | FTP | other *** search

/ Beijing Paradise BBS Backup / PARADISE.ISO / software / COMM / 400TER.ZIP / TLAN_001.EXE / COMMUNIC.HLP < prev next >

Wrap

Text File | 1996-04-19 | 27.7 KB | 583 lines

^m╒══════════════════════╤═══════════════════════════╡^t Communications setup ^m╞╕ │ ^nDevice name ^m│ ^nDevice Port Baud Com Address IRQ Vector ^m│ ├──────────────────────┼───────────────────────────────────────────────────┤ │^r Async Modem COM1 8N1 ^m│ ^h16550A fifo 1 19200 8N1 $03F8 4 $0C ^m│ │ ^hAsync Modem COM2 8N1 ^m│ ^h16550A fifo 2 57600 8N1 $02F8 3 $0B ^m│ │ ^hAsync Modem COM3 8N1 ^m│ ^hNo UART 3 19200 8N1 $03E8 4 $0C ^m│ │ ^hAsync Modem COM4 8N1 ^m│ ^hNo UART 4 19200 8N1 $02E8 3 $0B ^m│ │^b■^hISDN CAPI 1.1 ^m│ ^hCAPI 1.1 ISDN 1 64000 8N1 ^m│ │ ^hISDN-device (cFos) ^m│ ^hFossil 1 64000 8N1 ^m│ │ ^hFossil ^m│ ^hFossil 1 38400 8N1 ^m│ │ ^hInterrupt 14h ^m│ ^hInterrupt 14h 1 64000 8N1 ^m│ │ ^hFax device ^m│ ^h16550A fifo 1 19200 8N1 $03F8 4 $0C ^m│ │ ^hAsync Modem COM2 7E1 ^m│ ^h16550A fifo 1 19200 7E1 $03F8 4 $0C ^m│ ├──────────────────────┼───────────────────────────────────────────────────┤ │ ^bC^nonfigure comports ^m│ ^nAsync Professional 2.03 enhanced ^m│ │ ^nC^bh^neck IRQ ^m│ ^m│ │ ^bS^net default values ^m│ ^m│ │ ^bA^nuto installation ^m│ ^b■^n = Default device ^m│ ╘══════════════════════╧═══════════════════════════════════════════════════╛^n ^hMaximum baud rates^n Since setting up the serial port is one of the most important things in any terminal program, you must remember the following rules: Maximum bps rates: 4.77 MHz PC (8088) 9600 bps 8 MHz PC (8088) 19200 bps 8 MHz PC (286) 57600 bps 16 MHz PC (386) 115200 bps ^hWhen to use a fast 16550A serialchip with FIFO buffer^n You need 16550A serial UART chips if you want to have error free connections when using: an 8 MHz PC (8088); any kind of multitasker - eg: OS/2, Windows, DESQview, etc; a modem connected to a network drive. It does not matter how fast your machine is, a 486DX2-66 still give errors when there is no FIFO buffer in the machine. And this happends with baud rates even at 38400. If you have problems, set the speed to 19200 and see if that works. The 16550A UART chip gives you a small 16 byte FIFO buffer - which means the chip does not have to generate an interrupt every time a character arrives. Most PC's are delivered with the old 8250 or 16450 chips (almost the same), so if you get CRC errors, you should buy such a card. (Ask us or one of our Registration Sites where to obtain them.) All good internal high speed modems already have a 16550A UART implemented. When buying an internal modem make sure it has one! ^hDevice setup^n ^m╒════════════════════════════════════╤═════════════════════╡^t Device setup ^m╞╕ │^r Serial interface ^m│ ^hUART/Serial ^m│ │ ^bC^nomport ^m│ ^h2 ^m│ │ ^bD^nevice name ^m│ ^hAsync Modem COM1 ^m│ │ ^bB^naudrate ^m│ ^h57600 ^m│ │ ^bL^nock port ^m│ ^hYes ^m│ │ ^nDa^bt^nabits / Stopbits / Parity ^m│ ^h8,1,N ^m│ │ ^bP^nhonebook ^m│ ^hTERMINAT^n.FON ^m│ │ ^nCost^bf^nile ^m│ ^hTERMINAT.CST ^m│ │ ^nR^be^nceive buffer size ^m│ ^h2048 ^m│ │ ^nTransmit buffer si^bz^ne ^m│ ^h4096 ^m│ │ ^nSoftware flow control (^bX^non/Xoff) ^m│ ^hOff ^m│ │ ^nHard^bw^nare flow control (CTS/RTS) ^m│ ^hOn ^m│ │ ^bH^nardware flow control (DSR/DTR) ^m│ ^hOff ^m│ │ ^bU^nse 16550 fifo if available ^m│ ^h14 ^m│ │ ^bK^neep 16550 fifo on in shell ^m│ ^hNo ^m│ │ ^bR^nTS low while writing ^m│ ^hNo ^m│ │ ^bA^nuto RTS low trigger ^m│ ^h2 ^m│ │ ^nCarr^bi^ner detect mask ^m│ ^h128 ^m│ │ ^nInit strin^bg^n ^m│ ^hATZ^M ^m│ │ ^nRestore port ^bo^nn close ^m│ ^hNo ^m│ │ ^nClose port i^bn^n shell ^m│ ^hNo ^m│ ╘════════════════════════════════════╧═════════════════════════════════════╛^n ^hSerial interface^n Terminate supports 4 different interfaces. ^hUART/Serial ^nDirect serial chips ^hInterrupt 14h ^nVia BIOS int 14h max 9600 baud ^hFossil ^nResident serial devices, like X00/BNU or ISDN fossil devices. ^hDigiboard ^nVery fast intelligent multiport adapter. ^hComport^n Select which port to assign for this device, COM1..COM8 can be selected. ^hDevice name^n Enter the string to be shown everywhere the device is shown. You should enter your modem name here, 'Spirit II 19200 8N1' or whatever you have. ^hBaudrate^n Which baudrate to use for this device as default. Note that if you want to use a special baudrate that is not shown in the list, just press D and define it. ^hLock port^n When using a high speed modem (bps>=9600) you should always choose to lock the port. ^hDatabits / Stopbits / Parity^n ^hDatabits^n A data byte can contain 5,6,7 or 8 bits. The vast majority of applications will use either 7 or 8 bits since most of the data we are used to dealing with is expressed in 8-bit bytes (although text data can often be expressed in only 7-bits). Many time-sharing systems, such as CompuServe, work with only 7 data bits because that's all they need to display text data. When transfering binary data though, for example with a file transfer protocol, you usually switch to 8 data bits. If you use 8N1 and 7E1 on different systems, you must define 2 different devices and select the correct device in the phonebook. Create 2 devices which looks the same. They could be called: Device 1:^hMODEM COM2 2400 8N1^n Device 2:^hMODEM COM2 2400 7E1^n ^hStopbits^n Stop bits follow the data bits in the serial stream. The value for stop bits will always be either 1 or 2. Generally, 1 stop bit is used. ^hParity^n Parity describes a bit checking scheme. When used, all of the bits in a data byte are added together. A final bit, called the parity bit, is added such that the sum of all bits will be either odd or even (whichever you specify). The transmitter calculates and transmits a parity bit. If it is correct then it is assumed that the characters were received without error. If not, then it is assumed that there was some sort of error during transmission. Possible choices are determined by the remote system: ^hNone ^nNo parity is added, default ^hEven ^nA parity bit is added such that the bit sum is always even ^hOdd ^nA parity bit is added such that the bit sum is always odd ^hMark ^nA parity bit of value one is always added ^hSpace ^nA parity bit of value zero is always added ^hPhonebook^n When this device is selected, then use this phonebook. This will only work when starting up Terminate. ^hCostfile^n Which costfile to use when using this device. ^hReceive buffer size^n ^hTransmit buffer size^n Size of internal buffers used by Terminate. Only used with an interface that is buffered, otherwise these buffers are ignored. Only the UART/Serial interface is buffered. Do NOT change these values unless you are absolutely sure that you know what you are doing! ^hSoftware flow control (Xon/Xoff)^n This option controls the automatic software flow control. (Receive flow control - where Terminate tells the remote to stop transmitting characters, and Transmit flow control - where Terminate responds to the remote's request to stop transmitting characters as its input buffer fills. Whenever the input buffer is more than 75% full, an Xoff (#19) character is sent to the remote. It is up to the remote to recognize the Xoff (#19) and cease sending data. When the input buffer empties again to below 75% of buffer size, Terminate will send an Xon (#17) character to the remote. It is then up to the remote to recognize this character and resume sending data.) ^hHardware flow control (CTS/RTS)^n Hardware flow control is always preferred when available, because it is faster and much safer. Hardware flow control works with lowering and raising the modem lines. First you need to setup your modem to work with CTS/RTS hardware flow control. CTS means Clear-To-Send and when using hardware flow control the CTS line must be high (with the CTS light in modem lit) before anything will be sent to the modem. When the receive buffer is more than 90% full the RTS (Request-To-Send) line will be set low telling the modem not to send again until the buffer is less than 90% full. ^hHardware flow control (DSR/DTR)^n Some strange modems need DSR (Data-Set-Ready) instead of CTS and DTR (Data-Terminal-Ready) or both options together, but it is not advised to ever use this option unless you are sure you know what you are doing. Data-Set-Ready is sometime refered as Modem-Ready (MR) on your modem. ^hUse 16550 fifo if available^n Tests whether a 16550A is available in the serial chip and, if it is, uses its' FIFO buffer. Windows cannot use this by default. ^hKeep 16550 fifo on in shell^n When calling an external program or exiting Terminate, we normally disable the FIFO buffer. Some utilities cannot detect the 16550A chip or do not support the FIFO. The best thing is to disable (No) and let external utilities detect for themselves. ^hRTS low while writing^n If you do not have a 16550A chip and have problems with errors, you can try to set RTS low while writing. This means Terminate will stop receiving while writing protocol blocks to the disk. This will slow down performance a little, but is safer and could prevent hangups. ^hAuto RTS low trigger^n If you get more than X errors then the Auto RTS low function can be set to go into progress, a good way of keeping up performance to a maximum and only turn on RTS low when really needed. ^hCarrier detect mask^n When checking the modem status register this determines which bit should be used for checking carrier detect. Normally bit 7 (128) is used and you should only change this if you really know what you are doing. ^hInit string^n Select which init string you want to sent to the modem after changing device and before dialing. This string is also sent to modem at startup if it is the current device. ^hRestore port on close^n After Terminate closes the port you can choose to restore the port as it was before. But this means that you will get hung up if Terminal ready was low at startup and you call any external program. You should only turn this on if you really know what you are doing. ^hClose port in shell^n Normally there is no reason for closing the ports while shelling to DOS. But some external protocols might need this. Closing the port will save you a little in swap space, but if you are using fossil/ISDN you might get hung up if you close the port. ^hConfigure comports^n ^m╒═══════╡^t Configure comports ^m╞╕ │^n Address IRQ Vector ^m│ ├──────┬──────────────────────┤ │ ^nCOM^b1^n ^m│ ^h$03F8 4 $0C ^m│ │^r COM2 ^m│ ^h$02F8 3 $0B ^m│ │ ^nCOM^b3^n ^m│ ^h$03E8 4 $0C ^m│ │ ^nCOM^b4^n ^m│ ^h$02E8 3 $0B ^m│ │ ^nCOM^b5^n ^m│ ^h$4220 3 $0B ^m│ │ ^nCOM^b6^n ^m│ ^h$4228 3 $0B ^m│ │ ^nCOM^b7^n ^m│ ^h$5220 3 $0B ^m│ │ ^nCOM^b8^n ^m│ ^h$5228 3 $0B ^m│ ╘══════╧══════════════════════╛^n When using the UART/Serial interface, you can change the actual port IO address, the hardware IRQ and the software interrupt. You should not need to change anything here, but if you do, you must beware of potential hardware conflicts. Do not try to change the IRQ on your internal modems or serial card without knowing exactly what you are doing. If you have an internal modem and 2 external comports, you should always choose COM1 for the mouse and COM4 for the modem. If you choose COM3 you will conflict with IRQ4. Do not try changing the hardware jumpers/ switches without help and a manual for the modem. Before you change anything on the modem, always make a note of the current jumper settings so you always can go back. If your internal modem is capable of using IRQ 5 or 7, please be aware that the modem could conflict with other hardware, like netcards or SoundBlaster cards. If it does not work at once with the internal modem, please seek professional help. It is your hardware supplier that is responsible for ensuring the modem works. Terminate uses only standard calls, so if the default settings do not work, contact your hardware supplier. Please always remember to turn off the power before doing anything. The vector number is where to install the software interrupt, this number should always be IRQ + 8. IRQ>7 = IRQ+$68 IRQ0 , Vector $08 ( 8) Timer IRQ1 , Vector $09 ( 9) Keyboard IRQ2 , Vector $0A (10) Screen IRQ3 , Vector $0B (11) COM2,COM4 IRQ4 , Vector $0C (12) COM1,COM3 IRQ5 , Vector $0D (13) Free IRQ6 , Vector $0E (14) Floppy IRQ7 , Vector $0F (15) Free IRQ8 , Vector $70 (112) Real-Time clock IRQ9 , Vector $71 (113) Free IRQ10, Vector $72 (114) Free IRQ11, Vector $73 (115) Free IRQ12, Vector $74 (116) Free IRQ13, Vector $75 (117) Math Coprocessor IRQ14, Vector $76 (118) Fixed IRQ15, Vector $77 (119) (Reserved) These are the defaults for normal machines. If you have an internal modem that is capable of using IRQ 5 or 7, you should consider this. If you try to use IRQ0, IRQ1 or IRQ6 you could get in serious trouble and your machine could hang. ^hCheck IRQ^n ^m╒══════════════════════════════════════════════╡^t Check IRQ ^m╞╕ │ ^nFound COM1, $03F8, testing...uses IRQ 4 ^m│ │ ^nFound COM2, $02F8, testing...uses IRQ 3 ^m│ │ ^nFound COM3, $03E8, testing...uses IRQ 4 ^m│ │ ^nFound COM4, $02E8, testing...uses IRQ 5 ^m│ │ ^nNo chip COM5, $4220 ^m│ │ ^nNo chip COM6, $4228 ^m│ │ ^nNo chip COM7, $5220 ^m│ │ ^nNo chip COM8, $5228 ^m│ │ ^m│ ╘═══════════════════════════════════════════════════════════╛^n This function tries to determine which hardware IRQ the comports are using. Even if this routine fails to find the IRQ, it will work anyway, if you specify the correct IRQ. Not all machines will show the correct IRQ. ^hSet default values^n Set all devices to the default parameters. If you make some kind of mistake and cannot remember what you did wrong, you could use this function. ^hAuto installation^n Detect IRQ's on ports and finds on which port your modem is connected. Test for maximum baudrate on device and select initstrings. ┌──────────────────────────────────────────────────────────────────────────┐ │ ░░░░ Using Terminate on ISDN lines ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ │ └──────────────────────────────────────────────────────────────────────────┘ ^hUsing Terminate on ISDN lines^n First of all if you want to test or download the newest Terminate, the ISDN number for DAN BBS and many other dealers is in SITES.FON. Terminate supports internally CAPI version 1.1. The internal support for CAPI 1.1 has the following benefits. * No fuss installing or using, it just works like a modem * No need for using memory for extra drivers * Directly controls the ISDN channels from Terminate * Charging and time information directly supported * It is built in as a part of Terminate * Future additions easier to implement However you will not be able to run Doorway or other external functions that require a fossil driver and you will not be able to use all the advanced features that a fossil driver like cFos could offer. However since Terminate supports both CAPI and cFos-support you can start with the internal functions and if you have special needs or want more ISDN functions you can install a fossil driver like cFos later. ^hUsing the internal CAPI 1.1 support^n When you select the device CAPI, Terminate will simulate a standard HAYES modem and accept commands just like a normal modem. A simply test is to start Terminate and type ATI + ENTER and you will see the name CAPI driver information. " ATI (ENTER) TERMINATE -- ISDN CAPI 1.1 driver version 1.0 Copyright (c) 1996 by Strathrory Systems Limited. CAPI by: TELES GmbH, Berlin Version: Version 1.1, Profil A, Release 3.05 S/N: SA941081 OK " Please be aware, that all settings are optimized for maximum performance and for general use. As usual no setup is required from your side. ^hTerminate CAPI 1.1 Hayes Command Interpreter^n This document describes the valid commands and their parameters in the Terminate CAPI 1.1 Hayes Command Interpreter, which accepts commands in standard Hayes AT format and converts them into CAPI calls. ^hTo make a call with Teles-bundling (15000 CPS)^n Bundling of B-channels. Terminate currently only supports Teles-bundling. That means only cards made by Teles or supports the Teles bundling can use this function. It requires that the BUNDLE.EXE or the Bundle-protocol is enabled in the OS/2 or Windows CAPI-setup. You will only be able of detecting if the bundling is in progress if you transfer a file and the CPS rate gets above 8000-9000. ATB3D number-to-dial Remember to set it back to B0 afterwards. ^hISDN AT-commands supported^n (all starting with AT) ^b$ ^nDisplays general help, jumps to location in online manuals. ^bB0 ^nOriginating calls use X.75 64000 bps (ISDNC) [Default]. ^bB1 ^nOriginating calls use V.110 38400 bps (ISDNB) ^bB2 ^nOriginating calls use V.110 19200 bps (ISDNA) ^bB3 ^nOriginating calls use X.75 128000 bps (ONLY Teles Bundling) ^bDn ^nDials number. n=phone number. All dial modifiers are ignored. ^bE0 ^nDisables command echoing. ^bE1 ^nEnables command echoing (default). ^bH0 ^nModem on-hook - disconnects if online ^bH1 ^nModem off-hook - has no effect. ^bI ^nReturn driver information, manufacturer id, CAPI version/serial-num ^bI2 ^nReturn last dialed number ^bL ^nDial last called number again ^bMn ^nMonitor (speaker) control. 0=No sound, 1=Connect/hangup sound ^bQn ^nResult codes display. Has no effect. Always same. ^bVn ^nVerbal/Numeric result codes. Has no effect. n=0..1. ^bXn ^nResult codes options. Has no effect. n=0..9. ^bZ ^nResets interpreter and loads user-defined NVRAM settings (default at startup, reads CAPI.CFG from disk). ^b&C0 ^nOverride DCD signal (forced on) ^b&C1 ^nDCD follows true state of line ^b&D0 ^nOverride DTR signal (forced on) ^b&D1 ^nSame as &D2 ^b&D2 ^nDTR follows true state of CAPI ^b&F ^nResets interpreter and loads factory-defined settings ^b&L ^nEAZ to monitor. &L* all EAZ's, &L- no EAZ, &L123 only EAZ 1+2+3 ^b&Tn ^nSyncronise time with ISDN date/time after hangup. In Germany you do not get the seconds, but Terminate will try and at least put the hour and minutes right anyway. The date is always set. 0=No timesync, 1=Attempt to syncronise ^b&Un ^nCharging information units, use for cost calculation if available. Please note that this was tested in Germany. In Germany this is a service you have to pay extra for at the telephone company. 0=Never use, 1=Use if possible (overwrite normal cost-calculation) ^b&V ^nDisplays current modem settings. To make it as simple for you as possible, only important settings and registers are shown. ^b&W ^nWrites user-defined (current) settings to NVRAM (CAPI.CFG) ^bS0=v ^nSets the ring counter for incoming calls (default is 1, disabled). ^bS1=v ^nNumber of incoming rings (read only) (default is 0). ^bS2=v ^nASCII value of ESCAPE character (default is 43). ^bS3=v ^nASCII value of CARRIAGE RETURN character (default is 13) ^bS4=v ^nASCII value of LINE FEED character (default is 10). ^bS5=v ^nASCII value of BACKSPACE character (default is 8). ^bS7=v ^nNumber of seconds when waiting for connect during dialling (default is 20). ^bS14=v ^nServiced SI mask, services to answer (default = 128) Bit 0 Videophone Bit 1 Telephony Bit 2 a/b services Bit 3 X.21 services Bit 4 Fax (Group 4) Bit 5 Videotex (64 kbit/s) (*) Bit 7 Data (64 kbit/s) Bit 8 X.25 services Bit 9 Teletex 64 Bit 10 Mixed mode Bit 13 Remote control Bit 14 Graphic telephone service Bit 15 Videotex (new standard) ^bS19=v ^nSeconds without activity before hanging up, 0 = never hangup (default = 0) ^bS26=v ^nTX Windows default = 2 (Setting this to 1 will decrease speed) ^bS27=v ^nRX Windows default = 2 (Setting this to 1 will decrease speed) To repeat last command use A/ (A+slash) Supported replies from the interpreter: ^bOK^n ^bBUSY^n ^bERROR^n ^bNO DIALTONE^n ^bNO CARRIER^n ^bNO ANSWER^n ^bRING [caller-id]^n ^hUsing cFos ISDN fossil driver with Terminate^n Terminate offers you control and information on the ISDN fossil driver. However, only cFos currently supports the ISDN appendage since it is special calls developed by the authors of cFos. The coordination between cFos and Terminate has been tested by the authors of cFos and together we managed to boost the performance to the max. Thanks to Chris Lueders and Martin Winkler for their help on Terminate. The following menu will be displayed on Alt-M, I or "Ctrl-End" and can be accessed both when you are online or offline. ┌─────────────────────────┬───────┤ ISDN Fossil Menu (cFos) ├┐ │ B-channels in use │ 2 │ │ B2 Control flow │ Yes │ │ B2 Error correction │ Yes │ │ Caller number/ID │ 7669913 │ │ Total charges │ 0 0 │ │ ISDN time / Our time │ 12:00:00 12:00:05 5 seconds │ │ Statusline control │ Yes │ │ Reset driver │ │ └─────────────────────────┴──────────────────────────────────┘ cFos - ISDN MultiPort FOSSIL Driver for DOS Keys: Cursor Up Add a B-channel Cursor Down Remove a B-channel T Synchronize your machine with ISDN time S Statusline control. The status will be displayed in line 1 while in this menu and while transfering files. Disable it if you do not want Terminate to change the statusline. This is only available with cFos versions > 1.05. R Reset cFos (hangup) cFos is a FOSSIL driver for DOS, so any application with FOSSIL support (e.g. Terminate) can use it. cFos emulates a modem with AT commands and "translates" these commands to the CAPI 1.1 standard, Profil A compliant calls for the CAPI (Common-ISDN-API), a standard supported by most ISDN boards. Using this technique, it's easy to use standard software with ISDN and archive high transfer rates (7500 cps and more). cFos is a TSR driver and has lots of features and fine-tuning options. For instance, it offers dynamic B-channel bundling, can time-sync the computer with date/time info from the ISDN network, has a big status bar informing you about what is going on on the ISDN line and much more... To install cFos in memory before loading Terminate and unloading the driver after exiting, you could use the following: ISDN.BAT Sendbuffer Rcvbuf | aux port (for bundling) | | | cFos i -c1 -r4k -t6k -a0 <- -c0=COM1, -c1=COM2 etc. Terminat /Device:6 <- Run Terminate with ISDN device cFos d <- Remove fossil driver As an example you could use the following setup: Statusline Factory | Listen Disconnect after 2 minutes if no activity | | | | Setup: AT &F &D2 &L* &E0 S10.3=1 S19=2 X6^M Dial: AT&B1&M0D Dial using 1 B-channel Dial: AT&B2&M0D Dial trying to connect with 2 B-channels If you dial out with 2 B-channels and only one B-channel is free you will still get connected with 1 B-channel. Then you can run the Alt-M, I menu and increase the number of B-channels as soon as the other line gets free. However, remember that you will of course be charged twice the cost when using twice the speed. To automatic bundle channels when using cFos/Pro: Init: AT &B2 &M1 S64=5000 S65=7000^M This will make cFos bundle an extra channel when getting above 7000 CPS per channel and disconnect when dropping below 5000 CPS. In other words: If you are running a 7500 CPS connection, a new channel will be added, if the CPS rate falls to under 12000 CPS, it will be disconnected. NOTE that CAPI bundling is NOT the same as cFos Channel Bundling and there is no reason to load BUNDLE.EXE for cFos-bundling. If you are using the TelesS0 cards REMark the BUNDLE.EXE in DOS (STARTS0.BAT) or the Bundling under the OS/2 CAPI setup and simply use the instructions above. -a0 and &B2 is really all it takes. Terminate was tested with two Teles cards and we had no problems getting CPS rates of 15000+ using 2 B-channels and even higher using 3 or 4 channels. IMPORTANT is to press I to toggle "Info off" while uploading, since the screenwrites use up a lot of interrupts. With a 386-33 machine, you should have no problems sending with 15000 CPS. We have successfully tested Terminate under DOS, OS/2, Windows (and Win95) using channel bundling and 15000 CPS. We even tested various combinations DOS->OS/2, DOS->Win95, OS/2->DOS, OS/2->Win95, Win95->DOS, Win95->DOS, all successfully. For more information on cFos read the cFos documentation. ISDN calls to normal modems are not possible without special ISDN hardware that can emulate modems. This is how it is supposed to work.