VoIP
At Princeton University
               Dave Wirth
          Manager of Operations
        OIT Networking/Telephony
  ...
Agenda
Introduction – Background
VoIP & SIP
How we are Implementing Now
New Implementations Planned
Future Possibilities
S...
Background

VoIP Pilot for last 7 Years
701 Carnegie Center




                              3
Meridian CS-1000
         Remote Switch
                                     Verizon
         755 Alexander Rd.
          ...
What VoIP is NOT
Some Myths:
  VoIP Calls are Free
  VoIP lines can survive electrical
  blackouts
  Dial-up Internet is s...
What IS VoIP
A combination of hardware and
software, using IP standards to transmit
voice across an IP-based packet
networ...
What is SIP

Session Initiated Protocol
Designed around internet http://




                                   7
VoIP Versus SIP
             VoIP                  SIP
Properties   Complex design         Modular
             Difficult ...
VoIP Versus SIP
               VoIP                      SIP
Architecture    Terminal/Gateway         Servers
            ...
SIP URI Dialing
     One of the benefits of
     SIP is the ability to use
     one address for voice,
     e-mail, IM, et...
Traditional versus VoIP
Power              # of features
Reliability        Call a number versus
Equipment          call a...
Advantages of an IP Phone
 System
Applications
  Ability to combine multiple information
  (data, voice, image)
Disaster R...
Disadvantages an IP
 Phone System
Network Equipment Replacement
E911
Price of handsets
If on data network, when network fa...
Disadvantages an IP Phone
 System
Security Issues
  Voice path vulnerability when on LAN
  Denial of Service attacks
  Com...
Why We Upgraded
The driving force behind the change:
 Opportunity
   A new designated high-tech building
 Need
   To still...
The Opportunity
New building 3 miles from campus
Designated high-tech to house IT
First time IT group will be in one area
...
The Need
A need to feel connected away from office
University Experience
  One University number
  Individual and group co...
How We are
Implementing Now




                   18
Installation Challenges

New Systems
Policy Items




                          19
Multiple New Systems
TMS Upgrade
New Provisioning System
New Session Border Control
New Security Policies
New DHCP procedu...
Policy Decision Items

How to handle E911? Mobile 911?
How long do provide power for IP
phones?
What phones do we use?
Bes...
WOW Factors
Everyone gets CallerID
Click-to-Call
Phone logs




                         22
Simplified Call Handling
                                       Caller ID with
                                           ...
New Implementations
Planned




                      24
More WOWs
Meet Me Conferencing
Google voice vs. Personal Agent
Personal Agent
Individual routing of calls




            ...
Secure Meet Me Audio
 Conferencing       Let’s meet
                                 on my
                               ...
Secure Meet Me Audio
    Conferencing
Conference recording
All users permanently assigned one or more dial-in
numbers and ...
Google Voice - Supported
Conference Calls              One Voice Mail
Call Record                   Voice Mail
Block Calls...
Google Voice - Only
Voice mail transcript
Personalize Greetings
Call Screening
Listen-in
SMS
Free Calls



               ...
Personal Agent
Manage                    • View
  Personal information       • Call logs
  Personal address book      • Pe...
Find Me / Follow Me
  For Calls and IM
Select route criteria
  Caller ID, range of numbers, groups, presence state,
  time...
What May Be in the Future
Fixed Mobile Convergence
SIP Trunks
Soft phones
UC
Video


                           32
What is Fixed Mobile
Convergence?




                       33
IT Group – Today
Characteristics
 Split time between main campus and office
 located off-campus
 Highly mobile worker
 Rea...
IT and Support Solution
Single University Reach Number
 Make and receive calls on office number
 using mobile
 Real-time a...
University Benefits

Seamless WiFi-cellular handoff
Single Number Reach with existing PBX
Excellent WiFi Voice Quality
Pro...
Administration Benefits
Keep Business and Personal calls separate
Seamless transfer to desk and cell
Ability to answer off...
The Technology


   NORTEL
    Nortel     Server
                        Cellular            WiFi
   CS2100
SL100/CS2100
 ...
The Technology


   NORTEL
    Nortel     Server
                        Cellular            WiFi
   CS2100
SL100/CS2100
 ...
Common Deployment
 Challenges
Unique PBX and messaging environments
  Different vendors, versions
  Current voice architec...
Issues
Battery Life
  Dual antenna draws more power
  Frequently pulling/pushing email
Phones
  Many features only availab...
SIP Trunks
A different way to connect to carrier
Offers a means of Disaster Recovery
Can save money




                  ...
Soft Phone
Used on PCs, Laptops, Mobile Devices
Enable user to access PBX features from
remote sites




                 ...
Unified Communications
 Use any device
 To retrieve any information
 Typically voice, email, voice mail, IM,
 video
 Inclu...
Microsoft OCS Integration
     Call forwarding of CS 2100
     phone from OC client
        Pull down menu from OC
       ...
Next Steps
Looking into the future for Princeton
 New Chemistry building next year




                                   ...
Summary
New upgrade takes advantage of
opportunity
Addresses needs of occupants
Provides some “WOW”
Positions University t...
Options and Issues




                     48
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VoIP At Princeton University

  1. 1. VoIP At Princeton University Dave Wirth Manager of Operations OIT Networking/Telephony dwirth@princeton.edu 258-6626 Lunch and Learn 10/28/2009
  2. 2. Agenda Introduction – Background VoIP & SIP How we are Implementing Now New Implementations Planned Future Possibilities Summary 2
  3. 3. Background VoIP Pilot for last 7 Years 701 Carnegie Center 3
  4. 4. Meridian CS-1000 Remote Switch Verizon 755 Alexander Rd. PAETEC Meridian CS-1000 PA Remote Switch 22 Chambers St. PAETEC Meridian CS-1000 Remote Switch Meridian NYC 194 Nassau St. CS-2100 Meridian CS-1000 XA-Core Remote Switch Hybrid 693 Alexander Rd. Frist Campus Center Meridian SL-100 OCTEL Remote Voicemail Switch System Forrestal Center 701 Carnegie Center – VoIP SIP Lines 4
  5. 5. What VoIP is NOT Some Myths: VoIP Calls are Free VoIP lines can survive electrical blackouts Dial-up Internet is sufficient VoIP is Voice over the Internet 5
  6. 6. What IS VoIP A combination of hardware and software, using IP standards to transmit voice across an IP-based packet network Skype uses P2P not a true VoIP C/S model 6
  7. 7. What is SIP Session Initiated Protocol Designed around internet http:// 7
  8. 8. VoIP Versus SIP VoIP SIP Properties Complex design Modular Difficult to update Easy to Update Based on ISDN Internet friendly Standards Minimal feature set No real end-device feature standard Industry Establish Rapid industry Acceptance Most phones are momentum proprietary Growing interest in SIP Phones and soft clients 8
  9. 9. VoIP Versus SIP VoIP SIP Architecture Terminal/Gateway Servers Gatekeeper Scalability It was not inherently SIP inherently designed for wide area supports wide area addressing, though addressing. zones were added to handle that problem 9
  10. 10. SIP URI Dialing One of the benefits of SIP is the ability to use one address for voice, e-mail, IM, etc. (Uniform Resource Identifier) 10 10
  11. 11. Traditional versus VoIP Power # of features Reliability Call a number versus Equipment call a person 5 9s Cost, flexibility and better, richer ways of Telephones communicating Alarms, fax, 911 11
  12. 12. Advantages of an IP Phone System Applications Ability to combine multiple information (data, voice, image) Disaster Recovery Capabilities Network Utilizations Soft phones Agnostic - SIP 12
  13. 13. Disadvantages an IP Phone System Network Equipment Replacement E911 Price of handsets If on data network, when network fails so does voice New voice quality issues Echo Jitter Latency 13
  14. 14. Disadvantages an IP Phone System Security Issues Voice path vulnerability when on LAN Denial of Service attacks Computer Viruses Password protection Spoofing SIP Attacks 14
  15. 15. Why We Upgraded The driving force behind the change: Opportunity A new designated high-tech building Need To still have the “University” experience 15
  16. 16. The Opportunity New building 3 miles from campus Designated high-tech to house IT First time IT group will be in one area Time to upgrade telephone system 16
  17. 17. The Need A need to feel connected away from office University Experience One University number Individual and group communication capabilities Easy to use Common experience over any handset – ideally 17
  18. 18. How We are Implementing Now 18
  19. 19. Installation Challenges New Systems Policy Items 19
  20. 20. Multiple New Systems TMS Upgrade New Provisioning System New Session Border Control New Security Policies New DHCP procedures 20
  21. 21. Policy Decision Items How to handle E911? Mobile 911? How long do provide power for IP phones? What phones do we use? Best way to train end users? 21
  22. 22. WOW Factors Everyone gets CallerID Click-to-Call Phone logs 22
  23. 23. Simplified Call Handling Caller ID with Name Ad Hoc conferencing Distinctive ring tones Global & personal directories Client & network-based call logs Call Control Window Click to return call 23
  24. 24. New Implementations Planned 24
  25. 25. More WOWs Meet Me Conferencing Google voice vs. Personal Agent Personal Agent Individual routing of calls 25
  26. 26. Secure Meet Me Audio Conferencing Let’s meet on my bridge in Easy to use 30 minutes Just dial-in, anytime Manage your own preferences Chairperson controls Always available Convenient SIP, VoIP, and PSTN access From anywhere, anytime 26
  27. 27. Secure Meet Me Audio Conferencing Conference recording All users permanently assigned one or more dial-in numbers and a unique access code Users manage their own chairperson passcode Extra optional per conference password Chairperson can assign password when starting a conference (press 1 to start your conference or press 2 to assign a password) Optionally end conference when chairperson disconnects Displays caller ID or SIP address 27
  28. 28. Google Voice - Supported Conference Calls One Voice Mail Call Record Voice Mail Block Calls Notification One Number Listen to Voice Mail Answer on any Phone Share Voice Mail Forward Calls Mobile Apps* Phone Routing View Mailbox from Mobile* * Available with Soft Phone 28
  29. 29. Google Voice - Only Voice mail transcript Personalize Greetings Call Screening Listen-in SMS Free Calls 29
  30. 30. Personal Agent Manage • View Personal information • Call logs Personal address book • Personal/Global address books Meet Me settings • Service package Find me / follow me Enabling personal management – when, how, whom 30
  31. 31. Find Me / Follow Me For Calls and IM Select route criteria Caller ID, range of numbers, groups, presence state, time of day/day of week Select action Multi-level sequential and simultaneous ringing of pre- defined (mobile, work, home, client) or other numbers Reply with IM Send to voice mail Apply exceptions Save and activate routes 31
  32. 32. What May Be in the Future Fixed Mobile Convergence SIP Trunks Soft phones UC Video 32
  33. 33. What is Fixed Mobile Convergence? 33
  34. 34. IT Group – Today Characteristics Split time between main campus and office located off-campus Highly mobile worker Reachable only at assigned office number 34
  35. 35. IT and Support Solution Single University Reach Number Make and receive calls on office number using mobile Real-time access to information on mobile handset Leverage WiFi whenever possible 35
  36. 36. University Benefits Seamless WiFi-cellular handoff Single Number Reach with existing PBX Excellent WiFi Voice Quality Provides IM and Presence in addition to PBX functionality Eliminate laptop cellular data cards 36
  37. 37. Administration Benefits Keep Business and Personal calls separate Seamless transfer to desk and cell Ability to answer office phone anywhere On the road Work at home Accessible during weather or other emergencies Presence, Email, Calendar, Contacts 37
  38. 38. The Technology NORTEL Nortel Server Cellular WiFi CS2100 SL100/CS2100 PBX SIP PBX Client VoIP & SIP 38
  39. 39. The Technology NORTEL Nortel Server Cellular WiFi CS2100 SL100/CS2100 PBX SIP PBX Client VoIP & SIP 39
  40. 40. Common Deployment Challenges Unique PBX and messaging environments Different vendors, versions Current voice architecture is LAN centric and not WAN friendly Static desk phone centric dial plans – mobile user behavior is different and therefore needs mobile-centric dial plans and features Inadequate WiFi Networks Poor coverage and non-voice-grade networks Interference from surrounding networks Variable handset behavior Varying Cellular Voice and Data Network Varying coverage and network capabilities (2G vs. 2.5G vs. 3G) Inconsistent cellular data networks 40
  41. 41. Issues Battery Life Dual antenna draws more power Frequently pulling/pushing email Phones Many features only available with GSM phones Growing availability of dual mode WiFi phones Impact on wireless network 41
  42. 42. SIP Trunks A different way to connect to carrier Offers a means of Disaster Recovery Can save money 42
  43. 43. Soft Phone Used on PCs, Laptops, Mobile Devices Enable user to access PBX features from remote sites 43
  44. 44. Unified Communications Use any device To retrieve any information Typically voice, email, voice mail, IM, video Includes presence 44
  45. 45. Microsoft OCS Integration Call forwarding of CS 2100 phone from OC client Pull down menu from OC client to access call forwarding Simultaneous Ring is not yet supported Message Waiting indication on OC client Notification and control when using a secondary DN key on a business phone Utilization of SIP PBX interface as voice interface to OCS 2007 R2 45 45
  46. 46. Next Steps Looking into the future for Princeton New Chemistry building next year 46
  47. 47. Summary New upgrade takes advantage of opportunity Addresses needs of occupants Provides some “WOW” Positions University to use new technology 47
  48. 48. Options and Issues 48
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