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
www.citel.com
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
www.citel.com
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
www.citel.com