JPS644138A - Security system in data communication - Google Patents

Security system in data communication

Info

Publication number
JPS644138A
JPS644138A JP62159189A JP15918987A JPS644138A JP S644138 A JPS644138 A JP S644138A JP 62159189 A JP62159189 A JP 62159189A JP 15918987 A JP15918987 A JP 15918987A JP S644138 A JPS644138 A JP S644138A
Authority
JP
Japan
Prior art keywords
modem
transmission request
terminal station
station
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62159189A
Other languages
Japanese (ja)
Other versions
JPH0691531B2 (en
Inventor
Mikiro Eguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62159189A priority Critical patent/JPH0691531B2/en
Publication of JPS644138A publication Critical patent/JPS644138A/en
Publication of JPH0691531B2 publication Critical patent/JPH0691531B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the occurrence of damage caused by pirating ID, by collating both user ID and MODEM ID. CONSTITUTION:In completing line connection in a public telephone network 3 by an automatic reply of a center station with respect to a call from a terminal station, a center station side MODEM 4 gives a transmission request of a MODEM ID to a terminal station from an ID transmission request circuit 44. A MODEM 2 receiving the transmission request gives a MODEM ID transmission request to a terminal equipment 1. Thus, the terminal equipment 1 inputs a MODEM ID given in advance to a MODEM 2. The MODEM 2 compares and collates it with a MODEM ID stored in advance and sends a MODEM ID when they are coincident. A data base 5 receiving it collates whether the MODEM ID is a MODEM ID of a terminal station having an access right, sends an affirmative reply to the terminal station when the presence of access right is decided and the next user ID is collated.
JP62159189A 1987-06-26 1987-06-26 Security method in data communication Expired - Lifetime JPH0691531B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62159189A JPH0691531B2 (en) 1987-06-26 1987-06-26 Security method in data communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62159189A JPH0691531B2 (en) 1987-06-26 1987-06-26 Security method in data communication

Publications (2)

Publication Number Publication Date
JPS644138A true JPS644138A (en) 1989-01-09
JPH0691531B2 JPH0691531B2 (en) 1994-11-14

Family

ID=15688257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62159189A Expired - Lifetime JPH0691531B2 (en) 1987-06-26 1987-06-26 Security method in data communication

Country Status (1)

Country Link
JP (1) JPH0691531B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009059036A (en) * 2007-08-30 2009-03-19 Nec Infrontia Corp Data communication system, data communication control method, and modem device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009059036A (en) * 2007-08-30 2009-03-19 Nec Infrontia Corp Data communication system, data communication control method, and modem device

Also Published As

Publication number Publication date
JPH0691531B2 (en) 1994-11-14

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