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Convergent Communication Applications Using SIP

Yoram ArbelComox Inc.

yoram@comox.com

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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

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InternetHTTPSIP

WAPSMTP

Presence

TelephonySIP

H.323MGCP

Converged CommunicationApplication examples

Unified Messaging

eCalling

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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

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Example: Email click-to-call

Availability and contact links tie a conference toa particular subject.Recipients follow up withvoice conversation whenthe sender is around.

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Email InvitesConversation

Embedded Presence Projection

3

2

1

OR

One Click eCall

HearMe eCalling Example

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Example: a company directory

Clicking next to the names of any available employees will call them at their computers or telephones.

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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

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• 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

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• 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

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• Firewalls SIP offers hope of an endorsed standard

that will be able to penetrate for inbound transactions

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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...

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MailVision Unified MessagingPlatformSIP

PSTN

SIPPSTN

SIPPSTN

IMAP4 LDAP

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MailVision Unified Messaging - PC Web Access

EmailFaxVoiceDocuments

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• 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

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• 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

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JAVA SIP Phone Interface

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• Potential use of SIP “under the hood”

• Interface between some of the system modules

• Intelligent load balancing

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SIP Enables Convergence

• Provides an Internet like model for manipulating PSTN/IP telephony networks

• SIP will be a catalyst for converged networks

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Yoram ArbelComox Inc.yoram@comox.comTel. 408-245-0200

www.mailvision.com

www.hearme.com

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