Sip based enterprise communications platforms
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SIP-Based Enterprise Communications Platforms. Pat Rudolph Vice President, Solutions Architecture 3Com Corporation. Is SIP Over-Hyped?. Remember ISDN promises in 1990? Remember ATM in LAN infrastructure? Remember VoDSL (GR-303 back-haul)?. $2,000,000,000. Large. $1,500,000,000. Medium.

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SIP-Based Enterprise Communications Platforms

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Sip based enterprise communications platforms

SIP-Based Enterprise Communications Platforms

Pat Rudolph

Vice President, Solutions Architecture

3Com Corporation


Is sip over hyped

Is SIP Over-Hyped?

  • Remember ISDN promises in 1990?

  • Remember ATM in LAN infrastructure?

  • Remember VoDSL (GR-303 back-haul)?


Voice market overview

$2,000,000,000

Large

$1,500,000,000

Medium

$1,000,000,000

Small

$500,000,000

IP Telephony Inflection Point

$-

CY00

CY01

CY02

CY03

CY04

CY05

CY06

Year

LAN Telephony Adoption (Average of Analysts)

United States Line Shipments

Voice Market Overview

LAN Telephony Market North America

Source: Synergy Research Aug 2003

Three primary segments:

  • Small Business looking for Key Solutions (single site small)

  • Small & Medium enterprise looking for Hybrid/PBX Solutions (1-5+ sites 10-100+ users)

  • Medium & Large Enterprises looking for PBX Solutions (1000-5000 total users across 100+ sites)

    Replacement of old systems driving upgrades to IP

Growing market in all segments – One size does NOT fit all


The market favors simplicity

The Market Favors Simplicity

  • Ethernet versus Token Ring, FDDI, ATM

  • Packet versus Cell

  • TiVo versus VCR

  • SIP versus H.323, MGCP, Proprietary


Sip based enterprise communications platforms

Ingress

Directory

Accounting

Egress

Ingress GW

Gatekeeper

Egress GW

T1/PRI

Server

Server

T1/PRI

Q.931 SETUP

Q.931 CALL_PROCEEDING

H.225/RAS ARQ (AuthenticationAdmitLocationRequest)

ODBC Directory Lookup Request

ODBC Directory Lookup Response

H.323IngresstoEgressCall Set-Up!!

MSMQ Ingress Start CDR

H.225/RAS ACF (AuthenticationAdmitLocationResponseSuccess)

H.225/Q.931 SETUP (fastStart)

H.225/RAS ARQ (AuthenticationAdmitEgressRequest)

H.225/RAS ACF

H.225/Q.931 CALL_PROCEEDING (fastStart)

H.245 Full Duplex Logical Audio Channel Is Now Open

MSMQ Egress Start CDR

Q.931 SETUP (ANI,DNIS)

Q.931 CALL_PROCEEDING

Q.931 PROGRESS

In-band

Feedback

H.225/Q.931 PROGRESS

Q.931 PROGRESS

In-band audio established (examples include error messages or in-band ringback)

Q.931 ALERTING

Out-of-band

Feedback

H.225/Q.931 ALERTING

Q.931 ALERTING

Q.931 CONNECT

Q.931 CONNECT_ACKNOWLEDGE

H.225/Q.931 CONNECT

Q.931 CONNECT

Q.931 CONNECT_ACKNOWLEDGE


Sip based enterprise communications platforms

100 TRYING F6

Q.931 Call Set-Up

OFF HOOK

RTP w/ SDP (ESTABLISHED) F13

Analog Voice

Q.931 Connect ACK

ON HOOK

Q.931 Disconnect

BYE F15

BYE F14

Q.931 Release

200 OK F16

200 OK F17

Q.931 REL-Complete

SIP Phone to PSTN Phone Call Flow

SIP Phone A

CLASS 5

SIP PROXY

SIP GWY

INVITE F1

407 PROXY F2

ACK F3

INVITE F4

INVITE F5

Q.931 Proceeding

180 RINGING F8

180 RINGING F7

Q.931 Progress

Q.931 Alerting

200 OK F10

200 OK F9

ACK F11

ACK F12


Sip based enterprise communications platforms

ACCT

DIR/PROV

PROXY

SIP

SIP

SIP

SIP

ENTERPRISE

GATEWAY

IP

Backbone

10/100

10/100

A-LINKS

SS7 - STP

A-LINKS

SS7 - STP

IMT

T-I

IMT

T-I

CHICAGO

HOUSTON

PRI/T-I

PRI/T-I

DMS100

Class 5

DMS100

Class 5

DMS 250

Class 3

DMS 250

Class 3

DMS100

Class 5

DMS100

Class 5

MCI “IP Communications” (circa 2002)


Ip telephony is step 1

IP Telephony Is Step #1

After IP telephony, what applications are you considering for your Converged Network?

Video

Conferencing

Messaging

Audio

Conferencing

Collaboration

Contact

center / CTI

Nemertes Research, 2004

%

0

10

20

30

40

50

60

IP Telephony must be more than dial tone…


Sip it s not just dial tone

SIP - It’s Not Just Dial Tone

  • RFC 2543 abstract (1999)

    • The Session Initiation Protocol (SIP) is an application-layer control (signaling) protocol for creating, modifying and terminating sessions with one or more participants. These sessions includeInternet multimedia conferences, Internet telephone calls and multimedia distribution.


Sip based services

SIP-Based Services

  • Voice Mail

  • (IVR) Interactive Voice Response

  • Unified Messaging

  • User Mobility

  • Presence

  • Personalized Call Treatment

  • Find Me/Follow Me

  • Instant Messaging

  • Conferencing


Next gen voice messaging

Next-Gen Voice Messaging

  • Voice Messaging has been ubiquitous since 1995

    • Telephone answering primarily

  • Unified Messaging has been advertised, but not delivered- Why?

  • Unified Messaging – Definition?

    • Practical “on paper”

    • Not practical to deliver

  • IP Technology will make Next Gen applications as ubiquitous as VM has been

    • Practical to Implement - new architecture, new technology

    • Tools to migrate

    • Reliable - simple design with redundancy


Ip messaging value proposition

IP Messaging Value Proposition

  • Problem

    • Proliferation…

      • Connected devices

      • Communications accounts

    • Leads to an unmanaged explosion of connection demands—missed messages, multiple log-ins

  • Solution

    • UMS puts the control back in the hands of the user

  • How?

    • Single Smart Mailbox

      • Message media translation– voice and text

      • Network bridging – PSTN, IP

      • Device agnostic – cell, PDA, PC, pager

    • Enables users to set up access rules

    • Intelligent routing for messages


Architectural differences

INVITE

INVITE

RTP

Architectural Differences

Stateless SIP Proxy


Architectural differences1

INVITE

INVITE

200 OK

200 OK

RTP

Architectural Differences

B2BUA


Sip based enterprise communications platforms

Communication Portal

Speech

Access

Wireless

Access

Security

Services

XML, VoiceXML

Business Apps

Groupware, IM, ERP, CRM etc.

System

Mgmt.

Svcs.

Converged Communication Applications Suite

Web

Services

IP Telephony

IP Conferencing

Personal Assistant

IP Messaging

Collaboration

Contact Center

XML

VoiceXML

SIPCCXML

Communication Services

Media Services

Database

Services

Call Processing, Availability, Directory,

Location, Authentication etc.

Video, Speech

LDAP,

JDBC

Network Infrastructure

Routers, Switches, Firewall, etc.

Media Gateways

SNMP

A

P

P

L

I

C

A

T

I

O

N

B

U

I

L

D

E

R


Summary

Summary

  • SIP is becoming de facto choice for IP Communications

    • Interoperability

    • Large developer community

  • Architecture matters! Choose platform with modular services, published APIs, and flexibility to adopt new protocols


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