ITU-T H.460.18 (09 2005) (英) Traversal of H.323 signalling…….pdf
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- ITU-T H.460.18 09 2005 英 Traversal of H.323 signalling ITU 460.18 09 2005 323 signalling
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I n a n a Teeco m un t ion Un o n
TU-T
H,460.18
TELECOMMUNICATION
(09/2005)
STANDARDZATON SECTOR
OF TU
SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS
- Infrastructure of audiovisual services-supplementary
services for multimedia
Traversal of H. 323 signalling across network
address translators and firewalls
ITU-T Recommendation H. 460.18
Intarruntinrnl
TTU- E-SERIES RECOMMENDATIONS
AUDOSUAL AND MIULTIVIEDA SYSTEMS
CIARACERISTCSOVSUALPONESYSMS
1.100-11.199
IINERASTRUCIURE OE AUDOVIUAL SERVCES
11.200-11.219
Transmission multiplexing and synchronization
H.220-H.229
H.230-H.239
Communication procedures
lL.240)-11.259
H.260-H.279
Rclatcd systcms aspects
11.280-11.299
Systems and terminal equipment for audiovisual services
H.300-H.349
Directory scrviccs architccture for audiovisual and multimedia scrviccs
H.350-H.359
Quality of service architecture for audiovisual and multimedia services
lL.360-11.369
Supplementary services for multimedia
H,450-H.499
MOBILY AND COLLABORAON PROCEDURES
Overview o! Mobility and Collaboration, definitions, protocols and procedures
H.500-H.509
Mobility for H-scrics multimedia systcms and scrviccs
H.510-H.519
Mobile multimedia collaboration applications and services
lL.520)-11.529
Secunity for mobile multimedia systems and services
Sccurity for mobilc multimedia collaboration applications and scrviccs
II.540-11.549
Mobility interworking procedures
H.550-H.559
Mobilc multimedia collaboration intcr-working proccdurcs
H.560-H.569
BROADBAND AND RIPL-PLAYMULMA SERVCES
Broadband multimedia services over VDSL
H.610-H.619
Hor fim ther delail s, please refer to the list o//1(-1 Recommendalions
Inu-1nrecommendation ::4608
Traversal of H. 323 signalling across network address
translators and firewalls
Su
umma
This Recommendation extends H323 to enable H323 devices to successfully exchange signalling
and establish calls, even when they are placed inside a private network behind NAT/FW devices
These extensions, when used together with the facilities of H.460. 19, enable H323 endpoints to
traverse NAT/F W installations with no additional equipment on the customer premises
Altemnatively, the H460.18 extensions may be implemented by a proxy server to support unmodified
H. 323 endpoints
Source
ITU-T Recommendation H. 460.18 was approved on 13 September 2005 by ITU-T Study Group 16
(2005-2008)under the ITU-T Recommendation A8 procedure
Keywords
Firewall, FW/NAT H323, NAT NAT/FW, network address translator. traversal
ITU-TRec.H.460.18(09/2005
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