Message transmission using out-of-band signaling channel

Details Message transmission using out-of-band signaling channel Message transmission using out-of-band signaling channel

1995-04-13

1997-03-25

Olms, Douglas W.

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370462, 370468, 370524, H04J 302, H04J 316

Patent

active

056152132

ABSTRACT:
In a communication network having multiple transmission channels, digital data comprising messages sufficiently short to be treated as packet messages are not sent over the network channels ordinarily used for message transmission, but instead are sent over network channels typically used for out-of-band signaling. Each data message is prepared and its length is checked for suitability as a message packet. If the data message can be packaged as a message packet, it is sent over the flat rate network channel. If the message cannot be packaged as a message packet, then it is sent according to conventional message transmission techniques for the network. The channel selection scheme can be implemented in a system that utilizes the Integrated Services Data Network (ISDN), such that data messages are checked to determine if they can be sent over the ISDN D channel rather than over the more conventionally used ISDN B channel.

REFERENCES:
patent: 5289472 (1994-02-01), Cho
patent: 5490251 (1996-02-01), Clark et al.
Simpson, W., "PPP over ISDN", Internet Request for Comments (RFC) 1618, May 1994.
Simpson, W., "The Point-to-Point Protocol (PPP)", RFC 1548, Dec. 1993.
Ascend Communications, Inc., "Multiband MAX-T1/PRI, User documentation", pp. 2-6, 2-7 and 2-8, Jun. 1994.
Malis, A. et al., "Multiprotocol Interconnect on X.25 and ISDN in the Packet Mode", RFC 1618, Aug. 1992.

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