SEEREN. Voice Over IP GRNET Case study.

Transcription

1 2 SEEREN Vice Over IP GRNET Case study Gerge Thans gthans AT grnet.gr SEEREN2 VIP training Credits: Dimitris Daskpuls Mina Aggelpulu VNOC/GRNET

2 Presentatin Outline Current status f VIP GRNET infrastructure, available t the academic cmmunity. Implementatin, administratin and supprt f the available services. Service ptentials and plans fr expansin. Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 2

3 Current Status f the VIP Service Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 3

4 Vice Over IP Service Islated telephne netwrk that is based n a set f academic H.323 gatekeepers using the GRNet and GUNet infrastructure. Enables the end-users f the academic cmmunity t cmmunicate with each ther free-f-charge, within the academia. Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 4

5 Standardized but Open Architecture Based n Open Standards Signalling prtcls used H.323 majr deplyment SIP supplementary service Telephne ruting schemes SIP.edu user@auth.gr ENUM ISN/ITAD *491 Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl

6 Main and supplementary VIP services Call ruting and VIP cnnectivity between interperating netwrks. numeric (e.164 r ISN) like addresses. Security aspects Authrizatin f caller and callee. Multiparty-multipint vide cnferences. Presence services. Messaging services. Cnnectin f the end users with a directry service. Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl

7 Service Deplyment Majr deplyment f the VIP service is based n H.323 Hierarchical tplgy - Central/Natinal gatekeeper Each academic institute maintains its wn equipment: ne Η.323 Gatekeeper ne r mre H.323 Gateways t PSTN/SIP. the existing PBX which services the public PSTN r VIP telephny. PSTN r VIP telephnes. The gatekeeper f each academic institute cmmunicates with the central gatekeeper. The central gatekeeper maintains the addressing scheme fr gunet.gr and grnet.gr. Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 7

8 Service Characteristics Use f a natinal addressing scheme (using 10digit numbers). Use f an internatinal addressing scheme (E.164) fr calls t and frm the internatinal academic cmmunity cnnectecd t ViDeNet (internatinal VIP netwrk) The numbering scheme f all the academic institutes that participate int the service is maintained by the central gatekeeper. The requirement fr high availability f the service is satisfied by a secndary gatekeeper, which receives the requests f the institute gatekeeps when the primary gatekeeper ges ut f service. Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 8

9 VIP Netwrk Tplgy Aristtle University f Thessalniki Demcritus University f Thrace. Natinal and Kapdistrian University f Athens Natinal Technical University f Athens Cmputer Technlgy Institute Fundatin fr Research and Technlgy Athens University f Ecnmics and Business. Aegean University University f Thessaly University f Iannina University f Crete University f Patras University f Pelpnnesse. Technical University f Crete GRNET S.A. Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 9

10 Call Initiatin VIP call initiatin using either traditinal PSTN phnes, r VIP phnes, r cmputer based sftphnes. Initiate phne calls frm Greece t academic and research institutes arund the wrld that participate in the ViDeNet netwrk ( ViDeNet: internatinal, virtual netwrk fr VvIP services. Call ruting between academic institutes that participate in the service. The central gatekeeper frwards calls with 00* prefix t wrldwide gatekeepers f ViDeNet and redirects call with 0030* prefix t the gatekeepers f the academic institutes. Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 10

11 VIP Service Admnistratin The service is a jint effrt f GRNet and GUNet. The administratin f the service includes the fllwing actin pints: the netwrk cnnectivity f the VIP service The maintainance f the numbering scheme The technical supprt The availability f the service The QS f the service Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 11

12 Availability f the Service Errr Checking Techniques: Check the netwrk cnnectivity between the central gatekeepers Check the call establishment between an H.323 terminal registered with the central gatekeeper t H.323 phnes f the academic institutes. Check the call establishment between an H.323 terminal registered with a peripheral gatekeeper t H.323 phnes f the academic institutes. Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 12

13 Availability f the Service (statistics) Calls made frm Natinal Kapdistrian University t ther Greek institutes. Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 13

14 The future f VIP services n GRNet Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 14

15 Future actin pints fr the VIP service Integratin f H.323 with SIP Matching between E.164 and SIP.edu addresses. End users shuld have nly ne address. Maintenance f a cnsistent and glbal directry service either with E.164 addresses r with user@dmain addresses. Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 15

16 Integratin with SIP SIP Prxy SER (SIP Exchange Ruter) ή OpenSER Asterisk (Οpen Surce PBX) SIP t H.323 Gateway Asterisk SIP Clients X-Lite v.3.0 / Eye Beam v 1.1 SJ Phne v.1.60 Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 16

17 Interperatin between Η.323 and SIP Intrductin f H.323/SIP gateways int specific pints f the existing netwrk infrastructure. Supprt f SIP n the Cisc gateways, which are cnnected with the PBX systems f the academic institutes. Intrductin f the SIP/Η.323 service n the GRNet Service-Bx Cnfiguratin f the service thrugh the administratin GUI. Add/Remve Users n the lcal SER DB. Calls n SIP, H.323 r PSTN terminals that participate in the GRNet VIP service. Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 17

18 Current deplyment - Using Η.323/SIP/PSTN Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 18

19 Thank Yu! Gerge Thans tel: Kpanik, March 12th, 2007 SEEREN2 VIP training Winter Schl 19