1. John Drolet VP World Wide Sales www.citel.com
TMC University Introduction to the IP-PBX “Reap the Benefits of IP PBXs”
John Drolet
VP World Wide Sales
Bridging Two Worlds

2. Agenda What we’ll cover in this session:
What is an IP PBX (and what isn’t)?
What are the benefits?
Hosted versus CPE
Considerations in choosing a solution
What we won’t cover in this session:
Telling you what to buy
Technical details in depth (covered later)

3. What is an IP PBX? An IP PBX is a software application on a server.
The IP PBX application is the directory service and traffic controller between “endpoints”.
An endpoint can be a telephone (of many kinds), a gateway device (e.g. PSTN trunk gateways), or another application (such as voice mail).
Critical distinction -> the media stream (the voice) does not flow through an IP PBX.

4. What is an IP PBX? TDM PBX Break it down! Specialize!
Media Network
Station Cards
Trunk Cards
TDM
PBX
PSTN
Trunks
TDM
PBX
1010
Break it down! Specialize!
Set the software free!
Software
Media Network IP
PBX
Trunk
Gateway
Trunks
IP PBX Software
(w/ Applications)
PSTN
LAN
1010
Station Cards
Handset Gateway

5. What isn’t an IP PBX? VoIP ≠ IP PBX
“PC PBX” (Cards in a Server) ≠ IP PBX
TDM PBX with IP Trunk Cards ≠ IP PBX
TDM PBX with IP Station Cards ≠ IP PBX
An IP PBX is a software application on a server.
Critical distinction -> the media stream (the voice) does not flow through an IP PBX.

6. Agenda What we’ll cover in this session:
What is an IP PBX (and what isn’t)?
What are the benefits?
Hosted versus CPE
Considerations in choosing a solution
What we won’t cover in this session:
Telling you what to buy
Technical details in depth (covered later)

7. What are the benefits? Lower operating cost
Scalability and disaster recovery
Geographic Flexibility
Next-generation features

8. What are the benefits? Lower Operating Cost Cheap long distance
Pass calls over Internet or WAN between sites
Route traffic over WAN to area of lowest rates
Get cheap LD from an IP carrier
Reduce number of business lines
Share trunks among sites (or centralize them)
Pay for a full T-1 plus 2 backup trunks per site (instead of 6 – 8 trunks per site)
Lower administration cost (esp. MAC)
Web-based admin means less training cost
Allows remote admin and centralized admin
Enables user self-admin

9. Scalability and Disaster Recovery
What are the benefits?
Scalability and Disaster Recovery
Software is inherently more scalable!
Not limited by cabinet size for lines and trunks
More devices can be added as needed
Not limited by PBX processor capacity
Clustered servers can add scale (like web sites)
Mirrored servers can be miles apart
Same technology used for WWW and FTP
If one server goes down, devices “scramble” to another server and overall service stays up

10. Geographic Flexibility
What are the benefits?
Geographic Flexibility
No more 2500 foot limits on line length
Both signaling (“features”) and media (voice) are passed over IP at any distance
Phones and other devices all over the city and around the world can work as a single network
Single dialing plan, central admin, shared resources and applications, etc.
This enables several other benefits
Cheap long distance
Telecommuter support
Disaster recovery
Hosting becomes a viable option

11. Next-Generation Features
What are the benefits?
Dialtone
Invented when?
1890’s
Next-Generation Features
Make Call, Take Call (DOD, DID) 1890’s – 1940’s
Hold, Transfer, Conference
Music-on-hold, Paging, DND
Caller ID, MWI, Multiple Line Appearances
Call Forwarding, Bridged Lines, BLF
-- Traditional PBX Stuck Here
Call Logs, Directory Dialing
Instant Messaging
Telecommuting, SimulRing
Computer-Telephone Integration (CTI - a bundle)
Unified Messaging (an application)
-- IP Telephony Enables These

12. CTI + Make your PC and Phone work together: Click-to-Dial Call Logging
Call Recording
Incoming Call Pop
Visual Call Control +

13. Unified Messaging Single System for Voice, Fax & E-Mail
See All Mail In One In-Box
Listen to Voice Mail via PC
Hear via Phone
Respond to Voice Mail w/ and vice versa (reduce call-backs!)
Forward and Folder Voice Mail w/

14. 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, …

15. CITEL Gateway Web Admin.
System configuration options via IP addressing.
Easily configure telephones with pull down menus.

16. 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

17. Eventually You’ll Want All These
Computer-Telephone Integration (CTI)
Unified Messaging
Web Based Administration
Telecommuter/Branch Office Support
You can do these on a TDM PBX, but I wouldn’t recommend it

18. Next-Gen Features on TDM
Admin
Link
Admin
Server
PSTN
Circuit Trunks
TDM
PBX
1010
CTI
Adaptor
IP Trunk
Adaptor
Remote
Access IP
WAN or
VPN
Voice
Adaptors UM
Server
IP T. A.
What’s wrong with
this picture??
Do you think this will work?
RAA
Branch
PBX / KTS

19. Next-Gen Features in IP
PSTN
Trunks
1010
Trunk
Gateway
1010
LAN
WAN or
VPN
LAN
1010
IP PBX
Plus
Applications
1010
Software can be spread across many devices. One company doesn’t have to make all the elements. Different elements can be placed anywhere.
PC Softphone from Microsoft, Handset Gateway from Citel, phones from new IP PBX vendor plus your old phones.

20. If Local LAN deployment is an issue…
CITELlink SIP Gateway
for M1 handsets
Reuse PBX wiring R
CITELlink SIP Gateway
for Norstar Handsets
L A N
LAN server
IP Phone
(A Handset Gateway converts your existing
PBX telephones into IP phones without
doing a LAN upgrade or buying new phones.
Get the benefits of IP Telephony at $140/seat instead of $600.)
User experience maintained
Less customer training
Mix in IP phones as needed
Reuse of phone focuses attention on IP applications
Existing PBX work force can be leveraged

21. What are the benefits? Lower operating cost
Scalability and disaster recovery
Geographic Flexibility
Next-generation features
These all stem from “setting the software free”
Compare the pace of PBX feature development to the pace of Internet feature development
An IP PBX is a software application on a server.

22. Agenda What we’ll cover in this session:
What is an IP PBX (and what isn’t)?
What are the benefits?
Hosted versus CPE
Considerations in choosing a solution
What we won’t cover in this session:
Telling you what to buy
Technical details in depth (covered later)

23. Traditional Digital Centrex Service
R.B.O.C
Central Office
My Centrex
Dedicated wired service from Central Office.
Limited functionality with Analog or Proprietary Centrex Feature Telephones
All Applications derived from C.O. (Voice Mail etc.) R
L A N

24. Legacy PBX Telephones using existing level 3 cable
IP Centrex
Hosted Applications from Softswitch makers, providing:
IP Centrex – VOIP - SIP
Unified Messaging
Voice Recognition
Single Number Service, Etc.
Softswitch
Remote Serving
Location
CLEC
Service Provider
or Central Office
I.E. IP Centrex provider provides
Backbone capabilities….
…ILEC, CLEC:
Deliver the service
Eliminates Dedicated Lines from C.O.
High Value Applications can be decentralized.
IP Phone Choices.
Sharing of LAN infrastructure. R
IP Phones
L A N
CITELlink SIP Gateway
for PBX Telephones
IP Phones
Legacy PBX Telephones using existing level 3 cable

25. Hosted versus CPE Traditional “Centrex” Limitations
Relatively expensive compared to PBX
Limited features compared to PBX
Difficult to provision, long lead times for MAC
Mainly attractive to < 10 users or > 2000 users
-> Only has 10%-14% market share vs. PBX
IP Centrex
Costs are leveled (no wires, no class 5 switch)
Features are the same (it’s the same software)
Provisioning and admin are web-based
-> Expected to win 25% to 50% market share
-> Do you host your own web servers?
Hosted IP Telephony

26. Agenda What we’ll cover in this session:
What is an IP PBX (and what isn’t)?
What are the benefits?
Hosted versus CPE
Considerations in choosing a solution
What we won’t cover in this session:
Telling you what to buy
Technical details in depth (covered later)

27. Considerations in choosing
What are you trying to achieve?
Which benefits are driving your decision?
Should you buy or rent?
Don’t make a knee-jerk decision on this.
Hosted IP Telephony is a real option.
How will you get there?
Does the solution offer a migration path?
Can you protect your sunk costs?

28. Summary
IP Telephony is compelling telephony because of the benefits it brings.
Don’t be confused by VoIP noise.
Features and applications are the real drivers behind all PBX telephony. Be clear about what you want in your solution.
Consider the rent versus buy option, and look for a good migration option.

29. Q & A
Bridging Two Worlds