デジタル移動体データ通信交換システム、ならびにこれに具備されるデジタル移動体通信交換機およびデジタル移動体データ通信プロトコル変換装置

Title:

Document Type and Number:

Japanese Patent JP2658938

Kind Code:

B2

Abstract:

PURPOSE: To add a new communication service whose transmission speed is different without changing specifications to digital movement by analyzing a service kind, selecting a protocol converter, setting a communication channel and making communication possible only to the normally actuated converter. CONSTITUTION: In this digital mobile object communication exchange, the digital mobile object data communication protocol converters 70-72 are selected through a protocol converter selection means 11 corresponding to the analyzed result of data communication service identification information by a reception analysis means 10 and the communication channel with the selected converters 70-72 is set in a communication channel connection means 12. Then, the responses of the converters 70-72 to actuation from actuation signal send-out means 131-133 are monitored in response signal monitoring means 141-143 and only the normally actuated converters 70-12 become able to perform the communication with a mobile object by a release holding connection means 15. Thus, without changing the specification of the mobile object, the data communication service of the different transmission speed is added.

Inventors:

NITSUTA TOSHIO

Application Number:

JP509295A

Publication Date:

September 30, 1997

Filing Date:

January 17, 1995

Export Citation:

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Assignee:

NIPPON DENKI KK

International Classes:

H04L29/06; H04W28/22; (IPC1-7): H04Q7/38; H04L29/06

Other References:

ＮＴＴＲ＆ＤＶＯＬ．４０ＮＯ．１０１９９１，Ｐ．１２８５〜１２９０

Attorney, Agent or Firm:

若林忠

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