Examining SIP Based Endpoints. Jon Young Director, Softswitch Technology Inter-Tel, Inc.

Transcription

1 Examining SIP Based Endpints Jn Yung Directr, Sftswitch Technlgy Inter-Tel, Inc.

2 SIP Endpints Current state Types f endpints Endpint cmpsitin Extensins f SIP and ther prtcls n endpints Examples f endpint usage

3 SIP Endpints What is a SIP endpint? Uses SIP fr sessin setup Is it hardware? Is it sftware? Is it always a phne?

4 Hardware based SIP endpints

5 Sftware based SIP endpints

6 Bth

7 SIP endpints What s in an endpint Prcessr Sftphnes and clients take advantage f increasing prcessr speeds. (vide, cllabratin, etc. Embedded CPU + DSP (Digital Signaling Prcessr) Fading in favr f SOCs SOC System n a Chip Cmbines prcessing with ther functins Brings cst dwn

8 OS Many envirnments t develp fr. WinCE Linux VxWrks Windws ecs Mre.

9 Media/Cdecs Depending n the type f endpint there are many media types t deal with G.711 G.729 G.723 ilbc Speex Wideband cdecs Vide (H.263) Fax (T.38)

10 Current State What have we seen? A lt f variety Unique ideas Is there value in cpying legacy? What was right with legacy? Hard phne desn t crash Always there (Dh!...I just undcked my PC) What des IP and SIP free us up t d? Sme f these devices/applicatins are making use f mre than SIP.

11 Prtcls and Drafts Building n SIP t accmplish much mre. RFCs and Drafts T many t track Which will yu use? What is yur applicatin? What kind f fundatin in yur SIP endpint will yu build fr the future? Using ther prtcls/technlgies with SIP Standards based Prprietary

12 Mre than just a phne call What else can r des and endpint need? Presence Security Wireless/Dual Mde IM 3PCC Applicatin Interactin Event Ntificatin Business Features Management Diagnstics

13 Presence Use f SIMPLE t expse presence 3856 Presence event package Subscribe/Ntify Endpint usage Ntify that user is at desk typing Ntify my endpint that a user if free/busy (ie. Change icn r light lamp.

14 Security Secure media and signaling with standard prtcls. Is it needed r perceptin? Can yur endpint handle it? Can yur applicatins and servers handle it? TLS fr encrypting SIP signaling SRTP fr encrypting media

15 Wireless/Dual Mde Using SIP and 3GPP t implement IMS applicatins. Endpint Usage Switch call between private WLAN and Cellular netwrk.

16 Instant Messaging Use f SIMPLE t prvide instant messaging between SIP endpints. Between SIP Clients/endpints Phnes/devices? UI challenged (keypad r limited display) Frm an applicatin as a ntificatin MultiMdal (speech t text, text t speech)

17 3PCC Third party call cntrl Manipulate calls at endpint Multiple drafts Endpint usage PC client used t cntrl endpint similar t CTI/TAPI type f applicatin. Ex. Answer the phne, initiate dial, etc. Allws applicatin integratin

18 Applicatin interactin Utilize XML cntent in SIP messaging t prvide endpint interactin with applicatins. BTXML/WML fr display cntent. Endpint usage Allw endpint user t interact with vertical applicatins targeted fr their envirnment. i.e. Educatin, car dealership, etc.

19 Event Ntificatin RFC 3265/3842 fr Message Waiting Ntificatin. This prvides the ability fr applicatins t ntify an endpint f pending messages. Vice Mail Offline Instant Messaging Can als be used t summarize ntificatins

20 SIP-B draft Business Features BLA - Bridged Line Appearance IC Intercm ACD lgin Distinctive ringing Asserted Identity Cnferencing (Burger Draft) Call Pickup Mre Prvides usage and guides fr implementing business type features using SIP.

21 Management and Cnfiguratin HTML web page fr cnfiguratin Telnet fr debug DHCP fr retrieving cnfiguratin servers TFTP fr dwnlading cnfiguratin HTTP fr dwnlading cnfiguratin XML cnfiguratin files Binary cnfiguratin files

22 Enugh Already Just the tip f the iceberg. D we just keep piling it n? And yu thught H.323 was cmplicated. Simple vs. Cmplex endpints. Only make it as cmplicated as yur target audience needs. SIP Frum Phne Task Grup recently frmed. The purpse f this task grup is t define cnfiguratin guidelines, feature set descriptins and interperability guidelines using SIP.

23 Questins?

24 Glssary 3PCC Third Party Call Cntrl 3GPP Third Generatin Partnership Prject ACD Autmatic Call Distributin BTXML - Basic Telephny Extended Markup Language CPU Central Prcessing Unit DHCP Dynamic Hst Cnfiguratin Prtcl DMZ Demilitarized Zne: A netwrking term fr the part f an enterprise s netwrk between an external firewall (separating netwrk equipment in the DMZ frm the pen Internet) and an internal firewall (separating netwrk equipment in the DMZ frm the enterprise s internal LAN) DSP Digital Signal Prcessr DTMF Dual Tne Multi Frequency G.711 Cdec fr 64K PCM speech cding. G.729 Cdec fr 8K ACELP (Algebraically Excited Linear Predictin) speech cding. G.723 Cdec fr 5.3/6.3 ACELP at 5.3 kbit/s and MP-MLQ at 6.3 kbit/s GUI Graphical User Interface HTTP Hypertext Transfer Prtcl

25 Glssary cnt. HTML Hypertext Markup Language ilbc Internet Lw Bitrate Cdec IM Instant Messenging IMS IP Multimedia Subsystem IP Internet Prtcl NAT Netwrk Address Translatin RFC Request fr Cmment RTP Real Time Prtcl used fr transmissin f streaming media such as vice. RTCP Real Time Cntrl Prtcl. Accmpanies usage f RTP. SIMPLE SIP fr Instant Messaging and Presence Leveraging Extensins SIP - Sessin Initiatin Prtcl SIP-B Sessin Initiatin Prtcl fr Business Phnes SNMP Simple Netwrk Management Prtcl SOC System n a Chip SRTP Secure Real Time Prtcl TFTP Trivial File Transfer Prtcl TLS Transprt Layer Security XML Extended Markup Language