20 Case Study from Edith Cowan University SIP Enabled their core. SIP integrated Voice, PABX, Room based Video, Desktop Video, mobile SIP phones on campus, Instant Messaging and Presence. Unexpected demand was the Presence and Instant Messaging. Source: APAN 2005 and Questnet 2005, Steve Johnson Manager IT Infrustructure EDU May 2005
21 Case Study from Edith Cowan University Source: APAN 2005 and Questnet 2005, Steve Johnson Manager IT Infrastructure Edith Cowan Uni May 2005
24 H323-SIP Comparison of Components H.323SIP End Station TerminalSIP UA Network Server GatekeeperRegistrar, Redirect Server, Proxy Server MCUConference Server PSTN Gateway from Quincy Wus talk, http://www.apan.net Cairns 2004http://www.apan.net
25 H323-SIP Comparison of Protocols H.323SIP SignalingRAS/Q.931SIP Capacity NegotiationH.245SDP CodecsAny Real-time Communication RTP/RTCP from Quincy Wus talk, http://www.apan.net Cairns 2004http://www.apan.net
26 H323-SIP Comparison of Protocols (cont.) H.323SIP Message EncodingBinaryASCII TransportUDP and TCP Mostly TCP UDP and TCP Most UDP Data ConferenceT.120 Instant MessageRFC 3428 Inter-Domain RoutingAnnex GDNS from Quincy Wus talk, http://www.apan.net Cairns 2004http://www.apan.net
Other Security stuff SIP Workshop AARNet By Stephen Kingham Stephen.Kingham@aarnet.edu.au
30 WAN QoS: AARNet3 hands policy control back to University
31 VoIP Monitor used in AARNet –Distributed monitoring WITH –Feeds QoS availability into VoIP routing. If a user wants QoS and the monitoring indicates that QoS is not working then the calls gets congestion message. –See http://noc.aarnet.edu.au points to http://lattice.act.aarnet.net.au/VoIPMonitor/http://noc.aarnet.edu.auhttp://lattice.act.aarnet.net.au/VoIPMonitor/
36 Uses a common dial-plan called the Global Dialling Scheme (GDS), based on E.164 with 00 in front. AARNet runs one of the four International Root Gatekeepers. Although in Australia we use the International dialplan. http://www.aarnet.edu.au/engineering/projects/voip/gds/ http://www.aarnet.edu.au/engineering/projects/voip/gds/ 27 Country Gatekeepers. More than 156 advance voice and video networks. A community of Higher Education, some industry, K-12 and Research Organisations. Enabler for international and national collaboration. Plans to migrate to DNS (ENUM) Routing. International H.323 routing Telephone numbers
38 SIP Proxy DNS SIP-PBX Gateway PBX INVITE (sip:firstname.lastname@example.org) INVITE (sip:email@example.com) DNS SRV query sip.udp.bigu.edu telephoneNumber where mail=bob, What is returned is 12345 PRI / CAS bigu.edu Campus Directory SIP User Agent Bob's Phone SIP.edu Architecture (Phase 1) Dennis Baron, June 5, 2005 np128 Links the sip address to a plain old telephone Cheap and easy to do Hear from Dennis at APAN Tokyo 2006 On Wednesday morning.
39 SIP.edu Reachable Users Dennis Baron, June 5, 2005
41 SIP and E.164 routing Remember H.323 is static routing for everything. SIP can use the existing DNS to find people: sip:firstname.lastname@example.org, or variations of E.164 plus domain: sip:email@example.com Dial a number on a UA, eg 3575 = 3575@local domain. SIP we still need to have static routing just like H.323…….BUT WAIT….. TRIP (rfc 3219) does for telephone numbers that BGP does for the entire Internet. Dynamic routing. and ENUM (rfc 2916) uses the DNS to find the full SIP address using a telephone number. ACA might have ENUM Tier 1 into Australia soon http://www.aca.gov.au/telcomm/telephone_numbering/enum_nsg2/.
42 Peering SIP Networks Easy to peer using sip addresses with domain name. Everyone can call Bruce@aarnet.edu.au, or even firstname.lastname@example.orgBruce@email@example.com But routing E.164 (telephone) numbers is much harder. –ENUM –ISN/ITAD –TRIP
48 2. Today, many addresses sip:Stephen.Kingham@aarnet.edu.au tel:+61 2 6222 3535 mailto:Stephen.Kingham@aarnet.edu.au tel:+61 2 6222 3575 Source: Patrik Fältström, Area Director Applications Area IETF, from ITU Tutorial Workshop on ENUM 8 Feb 2002 Geneva
49 2. With ENUM, only one Hand out enum enabled number +61 2 6222 3575 Source: Patrik Fältström, Area Director Applications Area IETF, from ITU Tutorial Workshop on ENUM 8 Feb 2002 Geneva sip:Stephen.Kingham@aarnet.edu.au tel:+61 2 6222 3535 mailto:Stephen.Kingham@aarnet.edu.au tel:+61 2 6222 3575 ENUM returns all of these for the caller to choose from: