Title: Private SIP ??????? VoIP???????
1Private SIP ???????VoIP???????
2003/3/15 ???????????? ???????
- ???? ?????????
- ????
- ( hhat_at_isc.meiji.ac.jp )
2????????????... ??!
- VoIP Voice over Internet Protocol
- SIP Session Initiation Protocol
- ?Private SIP???????VoIP????????
- ?
- ?IP?????????????IP???? ?
- ??????!?
3VoIP??
(http//www.isl.intec.co.jp/contents/proj/ifax/iph
one/iphone.htm ????)
PC (Windows Messenger)
VoIP???
IP??????
?????
?????/FAX
IP???
4VoIP????
- ????IP????(???????VoIP????)???
- ????
- ??
133.26.208.75 (VoIP??5000)
??????
IP??????
VoIP??
VoIP??? (133.26.208.75)
5VoIP???????
- VoIP?????IP??????????!
- VoIP???????
- ? SIP (Session Initiation Protocol)???
VoIP???? IP????
050-1234-2051 133.26.208.97
050-1234-2052 133.26.208.71
050-1234-2053 133.26.208.88
61.VoIP?????
VoIP?? IP?????????
SIP???
2502 133.26.208.715060
2501 133.26.208.9710081
VoIP??
2503 133.26.208.8820081
2504 133.26.226.165060
2.OK
1.REGISTER From sip2502_at_misc-news.mind.meiji.ac
.jp Contact sip133.26.208.715060
VoIP??2504 IP133.26.226.16
VoIP??2501 IP133.26.208.97
VoIP??2502 IP133.26.208.71
VoIP??2503 IP133.26.208.88
72.VoIP???????
VoIP?? IP?????????
SIP???
2502 133.26.208.715060
2501 133.26.208.9710081
VoIP??
1.INVITE sip2502_at_misc-news.mind.meiji.ac.jp
From sip2501_at_misc-news.mind.meiji.ac.jp To
sip2502_at_misc-news.mind.meiji.ac.jp CALL-ID
DmxhDB837_at_133.26.208.97
2.INVITE sip2502_at_misc-news.mind.meiji.ac.jp
From sip2501_at_misc-news.mind.meiji.ac.jp To
sip2502_at_misc-news.mind.meiji.ac.jp CALL-ID
DmxhDB837_at_133.26.208.97
3. OK Contact sip2502_at_133.26.208.715060
4. OK Contact sip2502_at_133.26.208.715060
VoIP??2504 IP133.26.226.16
VoIP??2501 IP133.26.208.97
VoIP??2502 IP133.26.208.71
VoIP??2503 IP133.26.208.88
83.??
SIP???
VoIP??
????? (RTP - Real-Time Transport Protocol)
VoIP??2504 IP133.26.226.16
VoIP??2501 IP133.26.208.97
VoIP??2502 IP133.26.208.71
VoIP??2503 IP133.26.208.88
9SIP??????
- ??????
- VoIP?????
- VoIP??????(IP????)??
- VoIP???????(On/Off)
- (?????????????????????)
- ???????????????
- QoS(??????????)??????????
- VoIP?????????(PSTN)????????????
10SIP????????
- ??????????????????
- ???????
- SIP???
- SER - SIP Express Router http//www.iptel.org/ser
/ - IWU SipProxy http//www.mysip.ch/
- IPPSTN???????VoiceMail?????
- asterisk http//www.asteriskpbx.com/
11?????
- RTP (Realtime Transport Protocol)
- UDP?????????????????
- ??????
- ???????????????
- ??? (ITU??)
- G.711 (????64Kbps)
- G.723.1 (?????6.3Kbps)
- ? ???????IP??????????G.711???
G.711 G.723.1 etc.
RTP/RTCP
UDP
IP
??????? ???
12VoIP??(SIP??????)
- IP??
- 2?????????
- VoIP????
- ??? RT56v ??
- PC??????
- Windows Messenger
- ??????...
- Linux
- linphone http//www.linphone.org/
13????
- SIP????????????????
- VoIP??????????????
- ?
- VoIP?????????????
- PC????(VoIP????)
- ???(VoIP????)?PC
- ???(VoIP????)????(VoIP????)
- PC??????(VoIP????)
14????
133.26.226.x (???,LAN10100Mbps)
133.26.136.x (??)
SIP???
100Mbps1Gbps
133.26.208.x (????)
misc-news.mind.meiji.ac.jp IP133.26.136.153
VoIP??2502 IP133.26.226.? (DHCP???????)
VoIP??2503 IP133.26.226.? (DHCP???????)
SunFire 280 (Solaris8) SER(Ver.0.8.10)
???RT-56v (VoIP???) ???
???Loox S8 Messenger(Ver.4.7)
VoIP??2501 IP133.26.208.97
VoIP??(SIP??????)
???RT-56v (VoIP???) ?????
15????
- ????????
- G.711
- 8KHz,8bit???
- ???RT56v?CODEC?...
- ????????????
- 20msec, 160???
- ????
- 80Kbps (IP????)
- 95,2Kbps (Ethernet????)
- ????
- ??????? (VoIP?????????)
- PC(Messenger)???????????500msec?????
- VoIP?????????????????????
- ????????????????? (RT56v???)
- ??????????(9.6Kbps, ?????)??????(????)
16VoIP???????
- ?????
- ?????
- VoIP???????
- ????...
- ???PBX???
- ?????????
- PBX?????????????????
- IP???????
- NTT-com 1000????1,277,000(??)
17VoIP??????(??)?????????
- ????????????
- ???
- QoS
- ????????????
- (???????????)
- ??
- (??)
- ??????????????
- ????
- ??
???????
MIND
????????
?
????????
??????
18?????????
- FireWall Control Protocol
- SIP???????????????
- ???????????
- ????????VoIP???????
- OpenSource????????????????
19??????
1.???SIP??????
SIP???
???????
OCN(???)
2.????
Ether(100M)
ADSL(12M,Acca)
MIND
??? Flashwave2040 (VoIP???ADSL???)
???Loox S8 Messenger(Ver.4.7)
???RT-56v (VoIP???) ???
VoIP??(SIP??????)
20(??)??????
- ????(ITU-T)
- R?
- ????
- MOS?
- ????
- ?????
- Atliza VoIP analizer
- (http//www.artiza.co.jp/)
(http//www.soumu.go.jp/s-news/2001/011226_3_e.htm
l ????)