SCS Pactor, Руководство по установке

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1. Introduction
1.7.2 PACTOR-IP-Bridge
The PACTOR-IP-Bridge (PIB) is a new Network –Integration Protocol developed by
SCS
.
The dominant protocols of the Internet like TCP/IP, as well as the Point-to-Point Protocol
(PPP), which have become standard for establishment of links between Internet applications,
are combined with the PACTOR modes. The result of this intelligent protocol combination is a
data transparent and relatively fast Internet access via HF-radio using standardized user
interfaces. The PTC appears to an attached PC as if it were a Hayes compatible "telephone
modem”. The PTC locally takes over both the complete PPP and TCP/IP handling. Except for
a minimum fraction of protocol overhead, the physical PACTOR link only carries useful data.
The huge amount of overhead of the TCP/IP and PPP protocols (which are designed for broad
banded wired links) is reduced to the absolute minimum required. By locally carrying out the
PPP protocol between the PC and the PTC a further decisive advantage arises: Because of the
very short timeouts, PPP used to be nearly impossible over slow communication channels with
relatively large delays. Timeout problems are now solved by the PACTOR-IP-Bridge.
Summarizing the qualities of the PIB:
•
TCP/IP-transparent and relatively fast Internet access via HF-radio.
•
Internet-services accessible via PACTOR, e.g. E-Mail (SMTP/POP3), FTP, HTTP, ...
•
Up to 4 Internet channels ("sockets") over one physical PACTOR link.
•
Extreme compression of the TCP/IP and PPP"overhead".
•
Full PPP compatibility: Use of common client/server-software, like Netscape, Outlook,
Eudora and others is possible.
•
Easy embedding and configuration under all common operating systems.
•
No "timeout"-problems on PPP and TCP/IP.
As host system for the PACTOR-IP-Bridge
SCS
has developed the PTC-IInet.
1.7.3 EasyTransfer
EasyTransfer is a program developed for binary transparent file-transfers between two
computers connected via PACTOR. The graphical user interface is similar to some well known
FTP clients, which are used for file –transfers via the Internet. When viewing the software user
interface, the left side shows the contents of the local hard disk , on the right are the contents
of the enabled REMOTE directory of the PACTOR connected server. Files can easily be
moved between the two sides using standard drag-and-drop actions. In addition to FTP,
EasyTransfer has a “chat” mode to exchange hand typed messages. With that, EasyTransfer is
the ideal tool to exchange computer data via HF and over unlimited distances.
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