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OfficeServ

OfficeServ. ISP. 통신망에서의 Key-phone 의 위치. KINX. KIX. DIX. ⓧ. KTIX. ⓧ. ●●●. ⓧ. ⓧ. P A B X. K/P. Key-phone 의 탄생. n×(n-1) n C 2= -------- 2. ⓧ. n. ⓧ. ⓧ. ⓧ. ⓧ. P A B X. K/P. Key-phone 의 진화 경향. Key-phone 과 사설 , 국설 교환기 구별. ⓧ. ⓧ.

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OfficeServ

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  1. OfficeServ

  2. ISP 통신망에서의 Key-phone의 위치 KINX KIX DIX ⓧ KTIX ⓧ ●●● ⓧ ⓧ P A B X K/P

  3. Key-phone의 탄생 n×(n-1) nC2= -------- 2 ⓧ n ⓧ ⓧ ⓧ ⓧ P A B X K/P

  4. Key-phone의 진화 경향

  5. Key-phone과 사설,국설 교환기 구별 ⓧ ⓧ

  6. 구성 : Enterprise Spot view Spot call Internet xDSL Modem IP Switch Desktop PC (Nic포함) WLAN HHP AP WLAN PDA PSTN Note PC (Nic포함) VoIP Networking 일반전화기 VoIP G/W 디지탈폰

  7. 구성 : SOHO Spot view Spot call Desktop PC (Nic포함) WLAN HHP Internet xDSL Modem 내장형 AP WLAN Desktop폰 PSTN WLAN PDA Note PC (Nic포함) 일반전화기 Fax

  8. 구성 : OS7200 Spot view Spot call Desktop PC (Nic포함) xDSL Modem Internet Spot View Easyset WLAN HHP Router AP Q.sig over VoIP WLAN Desktop폰 WLAN PDA PSTN IP switch내장 Note PC (Nic포함) 일반전화기 Fax

  9. 종합 구성 ( Enterprise, SME, SOHO) IAD 무선LAN휴대폰 SOHO(Mini) 무선 LAN SME AP IP Network PDA × VoIP Gateway PC+NIC IP phone PBX ↓ Enterprise ↑ K/P × ▷ PSTN 큰 LCD Digi-phone 일반전화기 일반전화기

  10. 1 2 3 4 5 6 7 8 9 * 0 # 구성 : Digiphone Spot Call Server Easyset Server ICC Server IP Switch : Contents 제공 2 Kbps Sig. DLI 폰 S/W Upgrade 배경화면 Update 폰북 내용 Update USB RJ-11 jack Headset jack (Option) 녹음기능 제공 Recording jack Headset

  11. 구성 : IT phone Spot Call Server Easyset Server ICC Server IP Switch : Contents 제공 폰 S/W Upgrade 배경화면 Update 폰북 내용 Update RJ-45 RJ-45 jack Headset jack (Option) 녹음기능 제공 Recording jack Headset

  12. 기초 지식 : 7 Layers WAE Wireless Application Environment Protocol Data Unit html 7 Application FTP, Telnet, HTTP, POP3, DNS SNMP, DNS WSP Session layer 무슨 목적? (사업, 연애) Application Presentation 6 무슨 언어? (영어, 청소년 언어) WTP Transaction layer WAP Session 5 그 집의 누구와 무슨 일로 서신? WTLS Security layer 4 우체국 간 화물량 조정 등기/일반, 배달증명 Transport Transport WDP Transport layer TCP UDP Segment Internet Network Icmp, igmp IP arp 3 주소 어느 지방으로 어떻게 CDMA Packet, Datagram Network 봉투에 넣기 편지함↔관리실 몇 동 몇 호 잘못 투입 정정 × Data link LAN Ethernet, FDDI WAN HDLC, PPP, ATM 2 Frame, Cell Physical 1 배,비행기,자동차 보통,속달

  13. 기초 지식 : Circuit and Packet switching HDLC, PPP, SLIP Leased Line X.25, Frame Relay, ATM Packet-switched Service Provider PPP, SLIP, HDLC Circuit-switched Telephone Company

  14. 기초 지식 : Ethernet Base T 10 Media type UTP Baseband LAN speed in Mbps FTP

  15. 기초 지식 : Ethernet, TCP/IP Matryoshka Data Header Data Header SMAC Protocol Type Data FCS DMAC 2 6 6 46 4 Min.64 Max.1500

  16. 기초 지식 : Encapsulation FCS FCS Application Presentation PDU Session Upper Layer Data Segment Transport TCP Header Upper Layer Data Network Packet IP Header Data LLC Header Data Data Link Frame MAC Header Data Physical Bits 0101110101001000010

  17. 기초 지식 : De-encapsulation Application Presentation Session Upper Layer Data Transport Upper Layer Data TCP Header Network TCP+ Upper Layer Data IP Header IP + TCP + Upper Layer Data Data Link LLC Header LLC Hdr + IP + TCP + Upper Layer Data MAC Header Physical 0101110101001000010

  18. 기초 지식 : VoIP 색 초 록 식 초 록 Analog switching PCM switching H.323 vs SIP G.711 PCM 64 kbps voice G.729 CS-ACELP 8kbps voice T.38 Fax T.120 Data VoIP switching Link Header X byte IP Header 20 byte UDP Header 8 byte RTP Header 12 byte Voice payload 20~24 byte

  19. 기초 지식 : VoIP protocol stack Application Application Codecs Codecs H.323, SIP Transport Signaling Signaling Transport UDP, TCP, ... UDP, TCP, ... IP IP (Wireless) Link (Wireless) Link Physical

  20. 기초 지식 : Time switch ⓧ ⓧ Ms G Ms G Time Switch Mr Y Mr Y

  21. 기초 지식 : Switch vs. Hub Full duplex is supported. Each Tx or Rx independent. Sending→ Half duplex is supported. Each Tx or Rx shared. Receiving←

  22. 기초 지식 :무선LAN의 시장에서의 지위 Personal Home Office Wide Area - 저 전력 - 짧은 거리 - 유선 cable대체 - 음성,data 즐기기 - 단순, 확실, 신뢰 - 유선 cable대체 - Data만 - Roaming - 저 간섭 PAN LAN MAN LAN WAN

  23. 기초 지식 :무선LAN KORNET + 802.11e: QoS. Mac강화 보안 802.11f: Inter AP Protocol 802.11g :보다 고속(20→50 Mbps) 802.11h :전송전력관리, 5GHz사용 802.11b 2.4GHz, 11 Mbps

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