Thank you for selecting HayesConnect™ for your network serial services.
This document contains information that will help you set up and maintain the HayesConnect software. It provides useful hints and late breaking information that was not available at the time our manuals were printed. Please take a few minutes to go over this information before installing the HayesConnect software.
CONTENTS
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Overview Of HayesConnect
Client Software
Server Software
Tips
Installation
Changes since 3.0C
Customer Service
OVERVIEW OF HAYESCONNECT
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HayesConnect consists of a server application and a client chooser extension. In normal operation the server application is running on a dedicated Macintosh with one or more serial devices connected to it. ( This same Macintosh could also be used as a file server. ) The other Macintosh users on the network use the client chooser extension software to select the server and then access the serial devices it makes available to the network. The chooser extension allows users to assign server devices to the built-in modem and printer ports or registered them with the Communications Toolbox.
CLIENT SOFTWARE
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This is the chooser extension's main window. To assign a device to a built-in port, click on the icon of the item you want to use and drag it over to the icon of the
modem or printer port. Once the built-in icon darkens you may release the mouse button. This operation is called "Port Redirection". To complete the assignment click the 'OK' button in this window. This selection will be remembered between system restarts. To register a device with the Communications Toolbox just click anywhere in the rectangle surrounding the item and then click the "Register with" button. The device will be registered when you click the "OK" button. More than one device may be registered with the Communications Toolbox.
SERVER SOFTWARE
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This is an example of a server setup dialog. You must configure each device with this
dialog before it can be used on the network. Normally the "Use 'AT' commands..." and "Use flow control..." options are not checked. Refer to the Users Guide for more information on these items. Note: you do NOT need to check the "Use 'AT' commands..." to share Hayes compatible modems. For most devices the only items that should be set are: 'Share Device On Network', 'Device Name' and 'Allow reallocation...'. Other items you may want to set are the password and pool items. If the pool item is checked then the password item is disabled because the pool's password will be used instead of the individual device password.
The use of device pools is encouraged when sharing multiple devices, that are similar in function. An example would be three high speed modems that are grouped into a pool named "High Speed Modems". Each client on the network could select the "High Speed Modems" pool as the device connected to their modem port. When a client needed to access a device from the "High Speed Modem" pool the server will scan the devices in the pool and connect the client to the first one that is available. Without the pool, several clients might select the same modem for use and then block each other out as they tried to use it at the same time.
TIPS
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1. Many of the local printer drivers ( including Apple's ImageWriter ) leave the printer serial port open after a print job has been completed. Since HayesConnect will not release a device until the associated serial port is closed it is a good idea to set a short idle time-out value in the server's setup dialog for that port. I.E. 1-2 minutes. That way other users will be able to access that printer after you complete your print job because the server will make it available to other users after the idle time-out expires. If you are having a problem with your local serial printer driver working with HayesConnect you should check with the company who manufactured your printer to see if you have the latest version of their printer driver. Many of the companies who market serial printers periodically update their print drivers to correct problems or enhance operation.
2. If the server is running on LocalTalk and you are talking to a serial device at baud rates of 9600 or greater you may experience some data loss due to a limitation in the hardware on some Macintosh computers. To prevent this situation, you can either a) move the server to a Macintosh that is running on EtherTalk, b) try using the local flow control option in the setup dialog, or c) connect the device to a NuBus multiport card that provides independent I/O handling such as Creative Solution's Hurdler™ cards.
The User Guide covers this situation in more detail.
3. Assign like devices to pools when possible to allow maximum efficiency of server devices.
4. If features that support the Communications Toolbox are disabled or grayed out, the software has determined that the Communications Toolbox is not installed on that particular computer.
5. If you are using high speed data transfers on LocalTalk with file transfer protocols like Z-Modem you will have the best through-put by using block sizes of 1024 bytes or smaller and a window of 4096 bytes or smaller. Also, reduce the time-out values for errors.
6. If you delete a pool name in the server's device pools setup dialog and there are devices that were assigned to that pool you will need to use the device setup dialogs to reassign them to another pool. If you rename a pool that one or more devices are assigned to they will automatically know the new name of the pool.
INSTALLATION
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Installation of this software requires installing the server software on a host computer that will act as the serial server and the client on one or more other computers that will be the users of the serial server. Do not install the server and the client software on the same computer. This software is similar to a network file server in that the server and client software operate on seperate computers.
To install this software we recommend that you use the installer provided on the HayesConnect master disk. The installer should be started by double clicking on either the "Install HayesConnect Client" or "Install HayesConnect Server" documents contained in the HayesConnect Master disk. It is suggested that you quit all applications that may be running before installing the HayesConnect software. The installer will reboot this computer at the end of the installation process.
If you elect to install this software without the installer then make sure that all non-System 7 computers have a copy of the ADSP init in their system folder. Replace old versions of ADSP with the one on the HayesConnect master disk. The server is an application that may reside any where on a hard disk. The client software is a chooser extension that must be copied into the system folder.
Old versions of HayesConnect are not compatible with version 3.1. If you are upgrading an older version of HayesConnect to version 3.1, you must upgrade the server and the client computers to insure proper operation.
CHANGES SINCE 3.0C
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Server
Moved all non-data transactions between client and server to non-interrupt
priority to reduce CPU loading and improve compatibility while running with
other applications.
Enhanced the network settings dialog to include option to select tasking or
polling mode of operation and CPU loading control. The dialog has been renamed
to "Operational Settings".
Corrected compatibility problem between the server and AppleTalk Remote
Access Protocol (ARAP) The server can now share the use of an ARAP device.
I.E. A modem that is being used to answer incoming ARAP calls may also be
shared on the network for dial out purposes whenever it is not connected to a
remote ARAP client.
Changed startup dialog that warns about possible multiple server operation to
time out after one minute. This corrects the problem of not having the server
startup automatically after a power failure.
Changed startup operation to not try to open device drivers to verify availability
for network service. If a driver open error at allocation time it is reported back
to the client.
Changed server "Disable Setup" dialog to hide entered text.
Corrected memory problem associated with pool password validation.
Client
Corrected problem associated with asynchronous read/write calls to HC driver.
This corrected a compatibility problem with ARAP. An client may now use a
HayesConnect network modem as it's ARAP selection.
Enhanced error and status messages to user.
Improved driver installation and mapping techniques to improve compatibility
and reliability.
Changed installation script to not install the ADSP init if version 57.x.x of the
AppleTalk driver exists on the target machine.
Enhanced operation to remember up to 16 Communications Toolbox selections
between startups.
CUSTOMER SERVICE
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Be sure to register your software with Hayes. This will insure your warranty protection as well put you on our mailing list for product updates and announcements.
