This document provides late-breaking news about the Open Transport/PPP client. For more information about OT/PPP, please consult your user's guide.
Modems Supported by Open Transport/PPP
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Scripts that support most popular modems are provided on the Remote Access Client installation disks. The scripts include:
3Com Impact Analog 14.4
3Com Impact ISDN 56K
3Com Impact ISDN 64K
AT&T Dataport 288
AT&T KeepInTouch
Dayna CommuniCard 28800
Farallon Netopia 56K
Farallon Netopia 64K
GeoPort/Express Modem
GeoPort/Express Modem CNG
Global Village Gold/Silver/Mercury
Global Village Platinum
Hayes Accura 288
Hayes Optima 14.4
Hayes Optima 288
Megahertz CruiseCard 14.4
Megahertz CruiseCard 28.8
Metricom Ricochet Wireless
Microcom MicroPorte 4232bis
Microcom QX/4232bis
Motorola 326xV34
Motorola BitSURFR 56K
Motorola BitSURFER 64k
Motorola Power/Lifestyle 28.8
Practical Peripherals V.34
Supra 14400
Supra 28800
TDK DF2814
US Robotics Universal
Zoom V-series
Apple now installs all modem scripts in the 'Modem Scripts' folder (under the Extensions folder) instead of the Extensions folder. Future Apple products will handle modem scripts the same way. Modem scripts in the Extensions folder can not be used by OT/PPP.
Auto-routing of modem scripts has been disabled by the installer. Once OT/PPP is installed, a modem script will not be routed to the Extensions folder if it is dragged into an active System folder.
You may install all modem scripts using Easy Install or install only the modem scripts you choose using Custom Install.
If modem scripts are removed using Custom Remove, applications that require these modem scripts will no longer be able to function.
NOTE: You can delete any unneeded scripts from the 'Modem Scripts' folder, which is located inside the Extensions Folder. To recognize scripts, look for files listed as “Modem Link Tool Personal document.”
Using AppleTalk Remote Access Version 1.0 or Apple Remote Access
You can use AppleTalk Remote Access version 1.0 and 2.x modem scripts with OT/PPP; however, certain modem-based features, such as error correction and data compression, may not be supported by these scripts and thus result in non-optimal OT/PPP performance. You should try to use one of the modem scripts provided with OT/PPP; however, if you cannot find one that matches your modem, you can modify an existing script to suit your needs.
Using Connection (Chat) Scripts
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Using connection scripts with a TIA (or SLIRP) account does not work in all cases. A problem has been reported concerning the use of a connection script with a Netcom TIA account. To work around this problem, you can use the terminal window to log-on the shell account and launch TIA manually.
Using the Manual Dialing Feature
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Establishing an OT/PPP connection with manual dialing varies according to the type of modem you are using. To ensure that you can make a connection while using Manual Dialing, you may need to experiment with pressing the Connect button slightly before or after you hear the remote modem answer the phone.
Using the Redialing Feature
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OT/PPP attempts redialing only when the phone number that has been dialed is busy. If the connection attempt fails for any other reason, Remote Access stops redialing so that you can correct any problems.
With the Redialing Alternate Number option, the main number is dialed once before the redialing sequence is initiated. The redialing sequence then alternates between the main and alternate numbers.
Interactions with 3rd Party Software
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Netscape 2.x will not work reliably with pre-7.5.3 Mac OS or pre-1.1 Open Transport software. If you would like to use Netscape 2.01, you should make sure that System 7.5.3 and OT 1.1 are also used. Failure to follow this recommendation may result in incorrect behavior.
Macintosh Computers Using Virtual Memory
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If you are using a Macintosh IIfx, Macintosh Quadra 900, or Macintosh Quadra 950 and have virtual memory turned on:
1. If necessary, install the Serial Switch control panel from the “Install 2” disk.
2. Open the Serial Switch control panel.
3. Set the serial port setting to Compatible.
Modem Cable Requirements
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Most modems require a cable that supports the data terminal ready (DTR) signal. In addition, certain modems require a cable that supports CTS/RTS hardware flow control. To support DTR, the cable must connect pin 20 on the DB-25 connector to pin 1 on the Mini DIN-8. To support CTS/RTS, the cable must connect pin 5 on the DB-25 connector to pin 2 on the Mini DIN-8 and pin 4 on the DB-25 connector to pin 1 on the Mini DIN-8. See your modem vendor or Apple-authorized dealer to obtain the necessary cable.
Using Express Modem or GeoPort
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If you are using Express Modem software with either an Express Modem or a GeoPort telephone pod, you must turn on 32-bit addressing in the Memory Control Panel. Using 24-bit addressing may result in incorrect behavior.
Using ISDN Terminal Adapter
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Both Apple Remote Access Personal Server 2.1 and Client 2.1 support serial connection speed of 115200 and 230400 bps. By doing so, Apple provides Macintosh users the capability to make ARA connections over ISDN at 64 kbps or even 112 kbps if the ISDN terminal adapters at both sides support channel bonding and proper modem scripts are used.
NOTE: Not all Machintoshes' built-in serial ports support connection speed of 115200 and 230400 bps, though. Here is a list of Machintoshes that do.
Centris/Quadra 660AV, Quadra 840AV
Macintosh Performa 6100, 6116
Power Macintosh 6100, 7100, 7200, 7500, 7600, 8100, 8500, 9500
Workgroup Server 6150, 7250, 8150, 8550, 9150
To set the build-in serial ports at 115200 or 230400 bps, a new serial driver, called SerialDMA, needs to be installed to replace the standard Macintosh serial device driver. SerialDMA is provided by Apple, and the current version is 2.0.2. System 7.5.3 or later includes the latest version of SerialDMA.
