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Explore the possibilities of convergent communication through SIP, enabling rich applications, connectivity, and quality of telephony without the need for complete VoIP infrastructure coverage.
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Convergent Communication ApplicationsUsing SIP Yoram Arbel Comox Inc. yoram@comox.com
Convergent Communication via SIP • Internet applications, distribution, connectivity • Ubiquity and quality of Telephony • Rich applications and GUI can be applied to PSTN calls No need to wait for complete coverage of VoIP infrastructure
Converged CommunicationApplication examples Telephony SIP H.323 MGCP Internet HTTP SIP WAP SMTP Presence eCalling Unified Messaging
HearMe eCalling • Most Communications today: either real-time (telephones) or asynchronous (email, web pages) • Integrated Communication: combines asynchronous publication of user availability in email and elsewhere with real-time Internet voice conferencing • Cyber-era “business card” which includes the means to make contact
Example: Email click-to-call Availability and contact links tie a conference to a particular subject. Recipients follow up with voice conversation when the sender is around.
2 1 3 HearMe eCalling Example Email Invites Conversation Embedded Presence Projection One Click eCall OR
Example: a company directory Clicking next to the names of any available employees will call them at their computers or telephones.
VoiceCONTACT Application on VoiceSERVER Platform • Click to Call, Click to Conference • PC-PC; PC-Phone; Phone-Phone • Presence/Availability indication • Easy, impromptu “Instant Conferencing” Workgroup productivity tool: connected-ness, teamwork, productivity
SIP Simplicity for: • Easy interface to gateway, softswitch, Unified Messaging, other services • Small (<150KB) client for internet distribution • Call processing - e.g. Follow me • SIP Scalability: HTTP style stateless transactions allow use of web based load balancing techniques
Federated Systems Model • HearMe operates VoiceNETWORK, global service for everyone • Service Providers, Enterprises can license domain VoiceSERVERS - DNS name space • Domain controller defines routing and policy • SIP Proxy model directly supports this architecture
Firewalls SIP offers hope of an endorsed standard that will be able to penetrate for inbound transactions
MailVision Unified Messaging Platform • Voicemail, email, Fax, documents • Access from Web, Line Phone, Celphone • Modular • Scalable multiple servers anywhere on the net • Open Standards: SIP, IMAP4, LDAP, POP3, WAP...
MailVision Unified Messaging Platform SIP PSTN SIP PSTN IMAP4 LDAP SIP PSTN
MailVision Unified Messaging - PC Web Access Email Fax Voice Documents
SIP Interface for Incoming Message and Access Servers • Easy integration with Softswitch, Gateway, VoiceSERVER • INVITE information may affect handling - e.g. immediate non-password access to own mailbox
Rich User Interface with SIP clients • SIP Message Waiting information can be presented on screen phones • GUI much more friendly than IVR • JAVA application on Intelligent SIP phones, or server rendering on ‘dumb’ screen phones
Potential use of SIP “under the hood” • Interface between some of the system modules • Intelligent load balancing
SIP Enables Convergence • Provides an Internet like model for manipulating PSTN/IP telephony networks • SIP will be a catalyst for converged networks
C o m o x Yoram Arbel Comox Inc. yoram@comox.com Tel. 408-245-0200 www.hearme.com www.mailvision.com