Bridging Two Worlds

www.citel.com

Parting Is Such Sweet Sorrow:

Adding IP Telephony to Existing "Big Iron"

Mike Robinson

CTO

www.citel.com

Bridging Two Worlds

www.citel.com

Key Benefits of IP Telephony

Not “one wire to the desktop.”Not 300 bells and whistles.

Four Revolutionary Features:

- Computer-Telephone Integration (CTI)

- Unified Messaging

- Telecommuter/Branch Office Support

- Web Based Administration

You Can Do These on a TDM PBX.

Bridging Two Worlds

www.citel.com

CTI

Make your PC and Phone work together:

- Click-to-Dial

- Call Logging

- Call Recording

- Incoming Call Pop

- Visual Call Control

+

Bridging Two Worlds

www.citel.com

CTI on TDM PBX

TDM PBX

PSTNCircuit Trunks

USB or RS232

CTI Adaptor

CTI Adaptor Goes Between Phone and PBX, Connects to PC via USB.

Also can use CTI server approach.

$150 - $300 per seat.

Bridging Two Worlds

www.citel.com

CTI on IP PBX

CTI is implemented via software only.

TAPI driver and softphone application on PC communicate with the IP PBX over LAN.

No need for TAPI adaptor hardware because the IP PBX, PC, and phone all speak IP.

Trunk Gateway

Trunks

IP PBX

PC with Softphone & TAPI PSTNPSTN

LAN

1010

TAPI Interface Softwarewithin IP PBX

Bridging Two Worlds

www.citel.com

Unified Messaging

Single System for Voice, Fax & E-Mail

- See All Mail In One In-Box

- Listen to Voice Mail via PC

- Hear E-Mail via Phone

- Respond to Voice Mail w/ E-mail and vice versa (reduce call-backs!)

- Forward and Folder Voice Mail w/ E-Mail

Bridging Two Worlds

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Unified Messaging on TDM PBX

External UM Server attaches via station ports. Requires station card in PBX plus voice cards in PC plus (sometimes) external adaptor and/or serial data link from PBX.

Requires engineering effort for each model PBX.

TDM PBX

PSTNCircuit Trunks

VoiceAdaptors UM

Server

Bridging Two Worlds

www.citel.com

Unified Messaging on IP PBX

Unified Messaging is implemented in software only.

IP PBX runs on standard server OS (UNIX, LINUX, Win2K) so UM can run on the same server.

Or UM runs on its own server and communicates via an IP standard. No adaptors needed.

Trunk Gateway

Trunks

IP PBX

PC with UM Client

PSTNPSTN

LAN

1010

UM Server SoftwareOn IP PBX Server

Bridging Two Worlds

www.citel.com

Telecommuter/Branch Support(a.k.a. “Voice VPN”)

Enable PBX stations to be deployed over IP WAN or Internet.

- Part or Full-Time Telecommuters

- Small Branch Office to Metro Hub

- Distributed Call Center

- Toll By-Pass

- Coordinated Dialing Plan

Bridging Two Worlds

www.citel.com

Voice VPN on TDM PBX

TDM PBX

PSTNPSTNCircuit Trunks

Remote Access

Remote Access Adaptor Connects to PBX and to phone at other side of WAN.

IP Trunk Adaptors Provide Toll By-Pass & Dialing Plan

WAN or

VPN

WAN or

VPN

IPRemote Access

IP Trunk Adaptor

RAA

Telecommuter

IP T. A.

Branch PBX/KTS

Bridging Two Worlds

www.citel.com

Voice VPN on IP PBX

IP PBX and IP phones are already WAN-enabled. No need for more adaptor hardware.

Trunk Gateway

Trunks

IP PBX

PSTNPSTN

LAN

WAN or

VPN

WAN or

VPN

Telecommuter

LAN

Bridging Two Worlds

www.citel.com

Web-Based Administration

Open PBX Administration to Mere Mortals

- Reduce Training For PBX Admin

- Customer Self-Administration for MAC

- User Self-Administration (speed dial programming, call routing capabilities)

- Combined Admin of PBX, LAN, E-mail…

Bridging Two Worlds

www.citel.com

Web-Based Admin on TDM PBX

Administration Server Connects to PBX via Administration Link, Provides Web Interfaces and Unified Administration

TDM PBX

Circuit Trunks

AdminLink

AdminServer

PSTNPSTN

Bridging Two Worlds

www.citel.com

Web-Based Admin on IP PBX

IP PBX runs on standard server OS (UNIX, LINUX, Win2K) so web server is built right in!

Admin software just uses standard web application tools to control the various IP PBX settings

Trunk Gateway

Trunks

IP PBX

PC with Browser

PSTNPSTN

LAN

1010

Admin Server SoftwareOn IP PBX Server

Bridging Two Worlds

www.citel.com

Eventually You’ll Want All These

- Computer-Telephone Integration (CTI)

- Unified Messaging

- Telecommuter/Branch Office Support

- Web Based Administration

Bridging Two Worlds

www.citel.com

Having It All on TDM PBX

TDM PBX

Circuit Trunks

Remote Access

What’s wrong withthis picture??

Who is being difficult?

WAN or

VPN

WAN or

VPN

IP

IP Trunk Adaptor

RAA

Telecommuter

IP T. A.

Branch PBX/KTS

AdminLink

AdminServer

PSTNPSTN

VoiceAdaptors UM

Server

CTI Adaptor

Bridging Two Worlds

www.citel.com

The Problem is the PBX

In a traditional PBX, the call control application is “locked” inside a proprietary platform, and tied to the media switching fabric.

Other applications can’t communicate easily.

TDM PBX

Circuit Trunks

Call Control

PSTNPSTN

Bridging Two Worlds

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Having It All on an IP PBX

In an IP PBX, the call control application is separated from the switching fabric and becomes a typical data application on a standard server platform.

Advanced software applications like CTI, UM, Telecommuter Support, and Web Admin are built in and can run on the same server platform. All the applications communicate in an IP structure.

BUT it’s a total system replacement. Expensive!

Trunk Gateway

Trunks

IP PBXPlusApplications

PSTNPSTN

LAN

WAN or

VPN

WAN or

VPN

LAN

Bridging Two Worlds

www.citel.com

Having It All via Handset GatewaysMove to an IP PBX, Keep Your Phones

Other Side Provides Power and Protocol Mapping to Existing PBX Handsets

One Side of Handset Gateway Has IP Interface to the IP Call Control Device

IP Centrex Service Provider

SIPIP PBXs

3Com, Cisco, etc.

Bridging Two Worlds

www.citel.com

Having it All via Handset Gateways

A Handset Gateway converts your existing PBX telephones into IP phones without doing a LAN upgrade or buying new phones.

Can mix-and-match legacy digital phones with IP phones and migrate over time.

Get the benefits of IP Telephony without the forklift upgrade.

Trunk Gateway

Trunks

IP PBXPlusApplications

PSTNPSTN

LAN

WAN or

VPN

WAN or

VPN

LAN

Bridging Two Worlds

www.citel.com

Summary

- IP Telephony Supports Applications- These Enhance User Productivity

- You Can Do The Applications on TDM- Just Surround the PBX with Adaptors

- You Can Migrate to an IP PBX - Get All the Apps by Replacing Everything

- Or Migrate to IP, but Keep Your Phones- Get the Apps Without Replacing Everything

Bridging Two Worlds

www.citel.com

Q & A

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