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- Apollo/X.25, Technical Data
- Product Number LA67A
- Description
- Apollo/X.25 enables Apollo workstations to communicate over packet-
- switched wide area networks (WAN). Since X.25 is an international
- standard, the Apollo/X.25 protocol allows Apollo systems to communicate
- with a wide variety of products from other vendors, including
- mainframes, minis, workstations, and PCs. Apollo/X.25 users are able to
- conduct long distance communications for file transfer, electronic
- mail, remote log in, and remote program execution.
-
- [Figure 1 (Apollo/X.25 diagram) Caption: none]
-
- Apollo/X.25 is based on the 1980 recommendations of the CCITT
- (Consultative Committee for International Telephony and Telegraphy).
- Apollo/X.25 is yet another example of Apollo's commitment to openness
- and standards.
- The Apollo/X.25 applications will run on a 68K workstation or server
- using a COM-SCAT card. Any Apollo workstation, including the DN10000,
- attached to a LAN running Domain Distributed Services (DDS) is able to
- use the server/workstation's X.25 capabilities.
-
- Features
- o Provides shared X.25 gateway services to a community of Apollo
- workstations attached to Apollo Token Ring, Ethernet, or IBM Token
- Ring LANs.
- o Conforms to CCITT 1980 recommendations.
- o Supports X.28, X.29, and X.3 PAD functionality.
- o Operates at up to 64 Kbytes per second.
- o Supports glass TTY and VT100 virtual terminal emulation.
- o Simultaneously provides more than 128 virtual circuits (X.25
- sessions).
- o Provides a call library that allows users to write Pascal, C, and
- Fortran 77 applications that use X.25 virtual circuits.
- o Allows Apollo-to-Apollo file transfer.
- o Public carrier subscription parameters are set at the time of X.25
- software initialization.
- o Supports standard and non-standard window sizes and packet sizes.
- o Supports bidirectional or one-way logical channels.
- o Allows use of CRP (Create Remote Process) in the inbound log-in
- server.
-
- Hardware Options
- Apollo/X.25 uses the Serial Controller-AT communications controller,
- which can be used in any 68000-based Apollo workstation with an AT-
- compatible bus. The Serial Controller-AT provides two communications
- lines with speeds up to 64 Kbits. Each port can be configured for one
- of three supported physical interfaces: RS232, RS422/449, and V.35.
- Interfaces and line speeds can be mixed between the ports without
- restriction. Refer to the Serial Controller-AT product brief for more
- information. The Serial Controller-AT can be installed in either a
- dedicated server or a stand- alone workstation.
-
- Virtual Terminal and File Transfer Capabilities
- Apollo/X.25 conforms with the X.28, X.29, and X.3 PAD standards to
- provide line-oriented communications. These features allow users to
- write programs that may call upon the services of minis and mainframes
- from several different vendors.
- An interactive terminal emulation built upon the X.28, X.29 and X.3
- standards provides Apollo users with glass TTY or VT100 terminal
- services. These services allow the user to log into systems that
- support X.25 for the purpose of running programs, querying databases,
- or exchanging mail messages.
- Also included in the standard Apollo/X.25 product is the Apollo File
- Transfer Service (FTS). This feature gives Apollo users the ability to
- transfer files reliably from one Apollo system to another via the X.25
- PSN. In the event of a temporary failure of the communications line,
- the FTS application automatically detects the problem, suspends
- operations, and then ensures that the file is transmitted in its
- entirety once the line is restored.
-
- Ordering Information
- LA67A License, Media, and Documentation for 68K SR10
- BAC 9 track magnetic tape
- BAD cartridge tape
-
- Documentation
- D-13586-C Planning for Apollo/X.25
- D-13588-C Managing Apollo/X.25
- D-13587-C Using Apollo/X.25
-
- From HP Networking Communications Specifications Guide,
- 5091-3821E, 9205, p 007
- Associated files: la382107.gal, la382107.plt
- Apollo/X.25, Technical Data
-