Abstract
This paper describes the basic concept of switching control in CTRON. As Switching Control Extended OS (EOS), presently specifications for ISDN circuit switching and packet switching are provided. Since the EOS should be commonly used in many applications, protocol processing necessary for them, e.g., Q.931, X.25, etc., and speech path control are specified. The service primitives of the protocols correspond to system calls and asynchronous event notification, which are used by applications that perform translation, routing, billing function etc.. To assure reliability, fault tolerance and management functions are also specified. Switching Control EOS is now developing and expected to be used in vast area of communication.
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References
CCITT Recommendation Q.931 “ISDN user-network interface-network layer specification”
CCITT Recommendation Q.761 “Functional description of the ISDN user part of signaling system No.7”
CCITT Recommendation Q.762 “general function of messages and signals”
CCITT Recommendation Q.763 “Formats and Codes”
CCITT Recommendation Q.764 “Signaling Procedures”
CCITT Recommendation Q.771 “Functional description of transaction capabilities”
CCITT Recommendation Q.772 “Transaction capabilities information element definitions”
CCITT Recommendation Q.773 “Transaction capabilities format and encoding”
CCITT Recommendation Q.774 “Transaction capabilities procedures”
CCITT Recommendation Q.775 “Guidelines for using transaction capabilities”
CCITT Recommendation X.25 “Interface between data terminal equipment (DTE) and data circuit-terminating equipment (DCE) for terminals operating in the packet mode and connected to public data network by dedicated circuit.
Original CTRON Specification Series 1 Outline of CTRON, Ohm-sha, 1989
Original CTRON Specification Series 7 ISDN User Control, Ohm-sha, 1989
Original CTRON Specification Series 5 Communication Control, Ohm-sha, 1989
CCITT Recommendation Q.795 “Operation and Maintenance Application Part”
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© 1988 Springer-Verlag Tokyo
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Watanabe, K., Sunaga, H., Zingale, D. (1988). The Basic Concept of CTRON Switching Control. In: Sakamura, K. (eds) TRON Project 1989. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68102-1_11
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DOI: https://doi.org/10.1007/978-4-431-68102-1_11
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-68104-5
Online ISBN: 978-4-431-68102-1
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