Post on 01-Feb-2016
description
mmedia@rediris.es
mmedia
Jose María Fontanillo Muñizmailto: Jmaria.fontanillo@rediris.esJabber-id: fonta@im.rediris.esGDS: 0034 1000 001http://www.rediris.es/mmediaRedIRIS
CERN12 de Feb 2.004
CSSM Working Group
CSSM Working Group
2Jose María Fontanillo Muñiz – mmedia@rediris.es CERN 2004
GDS
• Global Dialling Scheme• Numbering plan• H.323 gatekeeper:
• Optional element in H.323. • Mandatory functions: address translation, admision
control, bandwith control and zone management• Optional functions: call authoritation, call
management, bandwith management and call control signalling.
3Jose María Fontanillo Muñiz – mmedia@rediris.es CERN 2004
GDS
RASRTP / RTCP
H.225.0
H.245
H.323 Application
TCP-UDP/IP
• An H.323 Gatekeeper can work in several ways:• Only Location (LRQ, LCF and LRJ) without endpoints
registered<- directory• With endpoints registered and direct signalling
between endpoints• Routing H.225/H.245 signalling• Proxy
4Jose María Fontanillo Muñiz – mmedia@rediris.es CERN 2004
GDS
5Jose María Fontanillo Muñiz – mmedia@rediris.es CERN 2004
GDS
GK Mundial
GK Mundial
GK EEUUGK EEUUGK HolandaGK HolandaGK EspañaGK España
UC3MUC3M UIBUIB ......
GK DirectorioGK Directorio
GK InstitucionesGK Instituciones
UnIYUnIY
00341001001003410010010031123400100311234001
00340034 00310031
1001100110021002
12341234
001001
6Jose María Fontanillo Muñiz – mmedia@rediris.es CERN 2004
GDS
• Defines 00 as the international prefix.• It uses well known ITU international telephone
prefixes:http://www.itu.int/itudoc/itu-t/ob-lists/icc/e164_717.pdf• The GDS also defines an alphanumeric dialplan :
< station ID>@<fully qualified domain name of the institution>
• Spanish national plan:
<number> = [<escape prefix>] <international part> <national part>
<international part>=0034
<national part> = <institution prefix><endpoint number>[<sufix>]
<endpoint number> = nnnn
7Jose María Fontanillo Muñiz – mmedia@rediris.es CERN 2004
GDS-Prefixes
Prefix Institution
1000 RedIRIS
1001 UC3M
1002 UIB
1003 CESGA
1004 UM
1005 UPC
1006 XTEC
1007 IFAE
1008 ESADE
... ...
8Jose María Fontanillo Muñiz – mmedia@rediris.es CERN 2004
GDS-Our Implementation
• Cisco 2600 router with the MCM extension of IOS as national gatekeeper
• Gnugk (www.gnugk.org) as gatekeeper for our endpoints
9Jose María Fontanillo Muñiz – mmedia@rediris.es CERN 2004
GDS-Applications
• ¿why? • Makes independence the id of terminal IP• More easy multiconference using an MCU, you only
need to dial a number• It can be used to videoconference and VoIP • Is the facto standard numering plan in research and
academic worldExample you can have your GDS number that can follow you ,
when you are in your office and you have bandwidth you can use your videoconference system, sometimes with a gateway you can redirect the call to a cellular telephone, sometimes to a IP phone in your house, etc