Communication method between processors in a decentralized multi

Details Communication method between processors in a decentralized multi Communication method between processors in a decentralized multi

1994-07-08

1998-10-13

Hunter, Daniel S.

Telephonic communications

Plural exchange network or interconnection

Multi-pbx interconnection

379279, 379241, H04M 700

Patent

active

058224211

ABSTRACT:
A communicating method between two processors in a decentralized multi-node exchange system comprising a central processing module for controlling the system by processing events related to a call process, and a signal processing module having a common memory, for transmitting/receiving a signal message generated in the exchange system to/from the central processing module through the common memory. In order to transmit a message through the common memory, the message is transmitted to a message transmitting buffer when the message transmitting buffer is emptied, and an interrupt is generated to a counterpart receiving the message when the transmitting buffer is not emptied. Meanwhile, in order to receive a message, the number of receiving messages is set during a period of time when the interrupt is received or when it is set to receive a message, and a message corresponding to the number of the receiving message is read from the common memory. Thus, since the transmission and reception of a message is controlled by the interrupt, messages can be transmitted and received at high speed and the real time response of a system is possible.

REFERENCES:
patent: 4442321 (1984-04-01), Stehman
patent: 4479195 (1984-10-01), Herr et al.
patent: 5179665 (1993-01-01), Roslund et al.
patent: 5214759 (1993-05-01), Yamaoka et al.
patent: 5276896 (1994-01-01), Rimmer et al.

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