? Enum?????????????????

1
? Enum?????????????????

• ??Enum???????
• TWNIC
• ??? ??
• ???
• snw_at_twnic.net.tw
• 2003/02/24 _at_TCA

2
TWNIC Enum Development Experience

• 2001????Enum???
• ???????????????
• Enum DNS ?????
• ????????????
• ????? DNS NAPTR RR ????(jointly with
  CNNIC)?????????
• ?? (Simplier than SIP) H323 Gate Keeper
  ???Enum????
• H323 (?? Enum)?????????????? Enum

3
TWNIC Enum Development Experience

• 2002
• ? NIPE-NCC/ITU-T??886????????
• ??? ISP/TSP ??????????????????
• ???? SIP ??? Enum ????
• ?? ITRI CCL ? Cisco ??? SIP ????????????
• SIP IP ??? Enum ????,???
• IP/PSTN ????? CCL ?? EBT/APOL ??????,???????????
  (Nortel Equipment Added)
• ???? Enum ???????????
• TCA Enum Forum Taiwan
• 2003
• ?? CCL ?? Enum ???????????,???? NBEN (??)??,???
  VoIPSIPEnum ??

4
ENUM ???????
Internet

• File Sharing Server
• file transfer/sharing

• DNS Server
• Subscriber Enum Directory

• Web/Database Server
• Subscriber Database
• Billing Database
• SIP Location Directory

• Messaging Server
• user data management
• chatting control
• UMS ( voice -gtmail)

IP Router
IDC
SS7
Media Server

• Softswitch
• Media Gateway Controller

• Softswitch
• Signaling Gateway

H323 Gatekeeper
PSTN
E1 Trunk
Trunk Gateway
SIP Proxy Server (Cisco)
SIP Redirect Server

• Netmeeting/
• SIP UA

POTS Phone (10000 numbers)
5
??????

• ISC BIND DNS
• H323
• H323 Client (Netmeeting)
• H323 Server(openh323 Gatekeeper)
• H323/PSTN GW (Cisco AS5350)
• SIP
• SIP user agent (CCL)
• SIP proxy server within registration and
  subscriber (CCL)
• SIP redirect server (CCL )
• SIP/PSTN GW (Cisco AS5350)
• IP/PSTN intercommunication ( CCL )
• Trunking GW with PRI
• Signaling GW with ISUP
• MGCP(MEGACO) or SoftSwitch

6
??????

• ?????,????????,???????????
• ?????,??????????????,???????,????????????????,????
  ?????????
• ?????,???????????? Enum ??????,????,?? Enum
  ????????
• ??????Enum???. ?????????/????, ??????????
• ?????,???????? Enum ???????????,????
• ?????, Enum ???? DNSSEC ??????????,???????????????
  ?,??? ISP/TSP DNS ???? Enum ????????
• ????????????????????????????????????

7
?????

• NIC ????????????????,????,?????,ISP
  ????,????????? Enum ???(TCA/???/TANET2003/APRICOT2
  003)
• ????????????,????,????????????,???????????????????
  
• ???????? Enum ?????????,?????????
• ???????,? Enum ??????????????

8
????????

• Enum ????? PSTN ?????????????
• ????? VoIP ????
• H323 ?????? VoIP ??,?????????? Enum ??,??? GK
  ???????
• SIP ????? VoIP ???,? 3G ??,??? SIP ???????? Enum
  ??,? Enum ?????????? SIP ???,??????? SIP
  ???????,???????????, SIP ??????????
• ????,??????????,???? Enum ??,????????????
• ??????????????????????,??????????????
• ???????????,????????? VoIP Enum
  ???,??????????????
• Enum ????????? Number Portability ?????,??????
• ????????,????????,????????
• NAPTR RR ???????? Web ,????????(WAP/PDA/Email)
  ???????

9
Resource

• Enum
• http//www.enum-forum.org
• http//www.etsi.org
• http//www.netnumber.com
• http//www.neustar.com
• http//www.itu.int/itu-t/
• http//www.ripe.net/enum/
• SIP
• http//www.vocal.com
• http//www.sipcenter.com
• http//www.cisco.com
• http//www.vovida.com
• http//www.dynamicsoft.com
• http//www.nortel.com
• RFC 2543(SIP)/2327(SDP)/1889(RTP)
• RFC 2705(MGCP)/3015 (megaco) /3054(megaco)
• H323
• http//www.openh323.org