• IE interfaces
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• v.20 no.3
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• pp.309-314
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• 2007

By an explosive increase of proxy driving, customers require the quick and correct services of call center. But because most call centers have an unsystematic management system, grievance of customers is continually increasing. To solve these problem, we constructed a call center system of proxy driving that is based on CTI (Computer Telephony Integration) in this paper. The proposed system is constructed using CID (Caller Identify Display) terminal, SMS (Short Message Service) and call center management program etc. Customer service level could be improved through efficient customer management by using the proposed system. Also it could be convenient and easy to implement customer management, order management, staff management, SMS and settlement of accounts.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10c
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• pp.256-258
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• 1999

본 논문에서는 DS-CDMA 시스템에서 예약 기반 MAC 플로토콜의 성능을 분석한다. 본 논문에서 고려하고 있는 예약 기반 MAC 프로토콜은 NAK 방식과 Request 큐잉 방식이다. NAK 방식은 예약 요구를 수락할 수 없는 경우에 NAK를 전송하여 전송 불가를 통지하는 방식이며, Request 큐잉 방식은 예약 요구를 수락할 수 없을 경우에 기지국에 예약 요구 패킷을 저장하는 방식이다. 그리고 이러한 두 방식에 채널 유지 기능을 추가한 방식을 함께 고려한다. 각 방식에서 패킷의 길이를 변화시키면서 수율과 평균 전달 지연 시간을 비교하였다. 성능 분석 결과 패킷의 길이가 짧은 경우에는 예약 방식의 성능이 매우 낮으며, 패킷의 길이가 길어지면 성능이 향상되는 것을 알 수 있다. 그리고 채널 유지 기능을 추가함으로서 전반적인 성능이 향상되며, 채널 유지 방식에서는 패킷간의 도착 시간, 예약 과정의 지연 시간 등을 고려해서 최적의 채널 유지 시간을 설정해야 함을 알 수 있다.

• 한국IT서비스학회:학술대회논문집
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• 2009.05a
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• pp.365-368
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• 2009

고속 인터넷 망 구축과 멀티미디어 통신 수요의 증가에 따라 VoIP는 기존의 PSTN 망의 대체 혹은 확장 기술로서 지속적으로 검증되어 왔다. 음성 데이터 처리 규약들 중 SIP는 다른 규약에 비해 신호 처리 단계가 간단하기 때문에 이를 기반으로 RTP를 활용하여 음성 통신 시스템을 구축하는 사례가 늘어나고 있다. 그러나 RTP의 특성상 패킷을 처리할 때마다 복원 과정이 필요하며, 다중 세션으로 통신이 발생할 경우 전체 패킷들의 관리가 복잡해지므로 이들 간에 혼선 없이 데이터를 처리 및 유지할 수 있는 방법론이 요구된다. 본 논문에서는 SIP 기반의 IP 전화를 통해서 고객과 상담원 간의 통화 이벤트가 발생하는 일반 콜센터 환경에서 RTP 음성 데이터를 처리하는 다중 세션 어플리케이션의 구축 사례를 제시한다. 구현한 시스템은 IP 전화에서 발생하는 통화 내역을 통합 스위치 서버에서 포트 미러링하여 녹취 및 녹음 서버로 전송하며, 전송된 패킷 정보들의 세션이 유지되고 있는 동안 음성 데이터를 실시간으로 모니터링한다.

• Journal of Auto-vehicle Safety Association
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• v.15 no.1
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• pp.63-68
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• 2023

A study on the need for a safety system using driver's biometric information, vehicle automatic emergency braking system, and the e-call system that in the event of an unexpected situation such as loss of driving ability due to sudden physical abnormality of elderly drivers and drivers with health problems, and the improvement of laws for the spread of this system were studied.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.8
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• pp.1725-1733
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• 2012

This paper describes the design and implementation of a 3-tiered proxy driving system utilizing smartphones. This system provides customers with a convenient request facility, and enables proxy drivers to provide a prompt service based on customer's location information. Implemented system supports two methods such as the existing phone-call and the online requesting method using smartphones. Performance analysis shows that the higher the ratio of online requests, the greater the effect of decreasing of phone jockey's workloads and the reduction of request processing time through the automation of receipt and processing. From a proxy driver company's standpoint, this system minimizes the increase of phone jockeys, and improves customer satisfaction through good service quality. This system also helps the company reduce the cost and increase the market share.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.3
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• pp.702-709
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• 2008

In this paper, Developed u-Marketing system prototype based on location base service could offer because this treatise combines personalized and mobility. It is u-Marketing system takes advantage of u-LBS base skill to support marketing that is old Mobile more efficiently u-marketing call center. If it was marketing in spam way that marketing to be Mobile passes public information contents one-sidely to unspecificness many customers so far, u-Marketing system takes advantage of u-LBS base skill-marketing system is u-marketing system of location base that can take advantage of subscriber's location information through portable phone or GPS with transfer telegraph operator adulterating member's distinction of sex, age, residential district, profession and support satisfied article ordered style Target marketing.

• KSCI Review
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• v.14 no.2
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• pp.215-224
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• 2006

Regarding a spam attack and the interception that a spinoff is largest among Vulnerability of VoIP at these papers study. Write scenario of a spam attack regarding VoIP Vulnerability, and execute Call spam. Instant Messaging spam, Presence spam attack. A spam attack is succeeded in laboratories, and prove. and confirm damage fact of a user in proposals of a spam interception way of VoIP service, 1) INVITE Request Flood Attack 2) Black/White list, 3) Traceback, 4) Black Hole-Sink Hole, 5) Content Filtering, 6) Consent based Communication, 7) Call act pattern investigation, 8) Reputation System Propose, and prove. Test each interception plan proposed in VoIP networks, and confirm security level of a spam interception. Information protection of VoIP service is enlarged at WiBro, BcN. and to realize Ubiquitous Security through result of research of this paper contribute, and may make.

• Journal of the Korea Society of Computer and Information
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• v.11 no.5 s.43
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• pp.241-250
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• 2006

Regarding a spam attack and the interception that a spinoff is largest among weakness of VoIP service at these papers study. Write scenario of a spam attack regarding VoIP service, and execute Call spam, Instant Messaging spam, Presence spam attack. A spam attack is succeeded in laboratories, and prove, and confirm damage fact of a user in proposals of a spam interception way of VoIP service, 1) INVITE Request Flood Attack 2) Black/White list, 3) Traceback, 4) Black Hole-Sink Hole, 5) Content Filtering, 6) Consent based Communication, 7) Call act pattern investigation, 8) Reputation System Propose, and prove. Test each interception plan proposed in VoIP networks, and confirm security level of a spam interception. Information protection of VoIP service is enlarged at WiBro, BcN, and to realize Ubiquitous Security through result of research of this paper contribute, and may make.

• Journal of KIISE:Computing Practices and Letters
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• v.10 no.2
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• pp.146-155
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• 2004

Currently most of commercial operating systems contain a high-level audit feature to increase their own security level. Linux does not fall behind the other commercial operating systems in performance and stability, but Linux does not have a good audit feature. Linux is required to support a higher security feature than C2 level of the TCSEC in order to be used as a server operating system, which requires the kernel-level audit feature that provides the system call auditing feature and audit event. In this paper, we present LxBSM, which is a kernel module to provide the kernel-level audit features. The audit record format of LxBSM is compatible with that of Sunshield BSM. The LxBSM is implemented as a loadable kernel module, so it has the enhanced usability. It provides the rich audit records including the user-level audit events such as login/logout. It supports both the pipe and file interface for increasing the connectivity between LxBSM and intrusion detection systems (IDS). The performance of LxBSM is compared and evaluated with that of Linux kernel without the audit features. The response time was increased when the system calls were called to create the audit data, such as fork, execve, open, and close. However any other performance degradation was not observed.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05b
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• pp.803-806
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• 2003

CTI(Computer and Telephony Integration) 기술이 1970년대 처음 선 보인 이래, 정보통신 기술의 눈부신 발전과 함께 그 인기가 날로 높아져 가고 있다. 정보기술(Information Technology)의 발전으로 향상된 컴퓨터의 기능을 활용한 다양한 서비스가 출현하면서 고객과 기업간의 상호 접촉이 증가되고 있다. 과거의 CTI기술은 Inbound 위주의 Voice and Call Communication 만을 위한 소극적인 개념이었으나, 현재의 대 다수의 기업들은 좀더 발전된 CTI 기술을 활용하고 있다. 최근 들어 기업간의 경쟁이 치열해지고 고객에 대한 우위를 높이기 위해 새로운 돌파구가 필요했다. 이에 대한 경영 솔루션으로, 인터넷 환경을 통합한 CITI(Computer and Internet Telephony Integration)와 eCRM 개념을 활용한 시스템의 사용으로 질 높은 서비스와 매출증대, 경비절감 등과 같은 경쟁력을 개선시킬 수 있었다. 본 논문은 CTI 기술과 CRM 개념을 활용한 시스템을 설계 구현하였다 이는, 전화의 호 전송, 호수신, 호 전달 등의 기능과 CTI 와 사설교환기(PBX)의 링크를 통합한 시스템이다. 제안된 시스템은 콜센터(Call Center)나 기타 고객의 접촉이 집중된 기업에 응용 되도록 설계되었다.