ip telephony at the australian catholic university a case study wil daniels manager, information...
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IP TELEPHONY AT THE AUSTRALIAN CATHOLIC UNIVERSITY
A CASE STUDY
WIL DANIELS
MANAGER, INFORMATION TECHNOLOGY SERVICES
Established 1991
Public University, Federal Funding
10,000 Students
1,000 staff
6 Campuses
HISTORY of the University
HISTORY ACU Data Network(Pre: IP Telephony)
Yr 1993 - Campus wide networks. Bridged 10base 2 LAN. Inter-State Campuses interconnected via 64K ISDN to AARNET. Mixed IPX TCP/IP network.
Yr 1995 - Campus LAN upgrades. Switched 10mb Ethernet core. Ethernet Cat5 Hubs at edge. Meshed Private 64K
ISDN/Frame Relay connecting Inter-State Campuses, Standardisation on TCP/IP, NT.
Yr 1997 - Lotus Notes, ISDN Video Conferencing
Yr 1991 - No campus wide networks. Individual office networks. 10base 2 LAN, No WAN, IPX based networks.
Yr 1991 - Individual Campus based Key and PABX systems. Inter campus calls via standard phone number.
HISTORY ACU Voice Network(Pre: IP Telephony)
Yr 1993 - All ACU sites integrated via Telstra Spectrum. Unique telephone number plan for each campus. 4 digit number plan.
Yr 1998 - Introduction of Repartee Voice Mail and integration with Telstra Spectrum. Review of ACU Voice Strategy
Approx $1.8million per annum on Voice with Telstra.
Key Factors for Reviewing Voice Strategy
80% of voice traffic is inter-campus with 65% STD.
Ongoing problems with billing.
Difficulty in maintaining accurate Phone Directory information.
Long Add/Move/Change Lead times.
$2.4m DEETYA Grant for Network Infrastructure upgrade of ACU Data and Voice network.
Catalyst for Change
1998
Data Network Upgrade
Yr 2000 - WAN 34M Microwave to AARNET. ATM WAN Transport. Private ACU ISDN network decommissioned.
- LAN Gigabit Ethernet Core 10/100M to the desktop Cisco Works NMS
Yr 1999 - RFPs issued for WAN and LAN components Selection of Vendors ATI and CISCO.
Private PABX network with Switched Permanent Circuits.
Voice Strategy Options
PABX with VoIP trunking. - (Review of the CSIRO experience)
IP Telephony
Long distance telephone traffic to major Australian capital citiesvia VoIP over AARNet
Review of CSIRO Experience
Local area calls transferred from AARNet to CSIRO PABX, thenswitched to local PSTN
6,000 calls per working day
90% saving on call charges
Voice quality is high
Forecasted Cost savings of approx 600K per annum
ACU IP Telephony Decision Criteria
Leverage of LAN/WAN investment
In house Adds/Moves/Changes
Platform for future services.
Confidence from CSIRO experience.
CISCO AVVID solution. Total cost $634,000
ACU IP Telephony Solution
1000 IP handsets . Cisco 7960
12 x Call Managers.
6 x Cisco 3640 ISDN Gateways
CallManager CallManager
End-to-End IP Telephony with Application EnablementEnd-to-End IP Telephony with Application Enablement
Router/GW Router/GW
IP WAN
Migration from Spectrum to IP Telephony- Number Portability- PSTN Access/Numbering- Service Transparency
ACU IP Telephony Implementation Issues
IP Telephony Design Considerations- Layer 2/Layer 3
- QoS- Least Cost Routing- Codec Selection
Voice Mail and Analog Device Support (Fax).
Contingency and Management
Pilot - 3 months Dec 99 to March 2001- 100 Handsets. - Library Pilot Group
ACU IP Telephony Implementation History
Full rollout - March 2001- 1000 handsets- Parallel IP Telephony and Spectrum systems.
Staff Training - May 2001.
Unity Voice Mail Rollout and Integration - May 2001
Full Replacement of Spectrum System with IP Telephony.
STRATEGIC BUSINESS ADVANTAGES OF VoIP
VoIP technology can provide cost savings
Interface to Corporate address book, point & click dialing
Provides one stop interface to voice mail and email
Provides easy roaming facilities
Caveats
Integration issues with some legacy Analogue equipment.
QoS issues must be identified and carefully designed for.
IP Telephony requires a major redesign of network infrastructure
Current network staff can support VoIP installation
Displacement of STD and ISD calls is key to savings
Payback periods are changing as carriers offer more competitivevoice tariffs