From TDM to VoIP in one Big Bang

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From TDM to VoIP in one Big Bang (was the
plan) Delia Gallagher
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Why?

• Ageing PBX
• Cabling
• Building and Inter building
• No non-IPT enabled systems on the market
• University Network should be good enough for
  voice
• Upgrading network and cabling
• Features - home working, video conferencing,
  wireless phones, directories integration

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How?

• Went to OJEC
• Used consultants
• Spent many hours in meeting rooms
• Went on site visits
• Spent many hours in meeting rooms
• Did Cisco IP telephony Trial
• Spent many hours in meeting rooms
• Why so much discussion?

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Voice Systems Evaluation OJEC

• The following companies made the shortlist
• Siemens
• Alfred McAlpine
• Omnetica
• Satelcom
• Telindus
• TNS

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How cont

• Spreadsheet used for evaluation
• Lots of time in meeting rooms
• Reaching final decision

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What it all looks like

• The old network
• The new network

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Implementation Known Challenges

• 3200 phones to deploy on one campus
• Change from 4 5 digit internal numbering
• Change to external DDI
• Major campus refurbishment programme and 2 new
  builds
• New network to be installed (Cisco)
• 8 buildings to be fully re-cabled
• Equipment Rooms new CER

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Implementation Actual Challenges Issues part
one

• Buildings not finished on time
• Lack of capacity extra cabling required
• Data Collection
• Demands of the Migration Timetable

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Actual Challenges Issues part two

• iSLX and Call Manager incompatibility
• iSDX and Call Manager interworking problems
• Equipment Rooms UPS issues
• Emergency Phones, Lift Phones, Modems, ISDN Lines

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Actual Challenges Issues part three

• Learning Curve for Staff Data Telecoms
• User Expectations (after the revolution)
• Directories Integration

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How the telecoms side of VoIP views VoIP (my view)

• Advantages?
• Cost
• Workload
• Many more teams involved,
• Ease of Use
• No synchronisation with passwords
• Need to use a web page to set up a personal
  address book
• Features
• New features
• Features lost

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How the telecoms side of VoIP views VoIP (my
view) cont

• Administration
• BUGS!!?
• Directories Integration no LDAP
• Call manager Directory
• Display Name
• Voicemail
• ARC operator console
• Phone Book (spreadsheet)
• Call Logger

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To Sum Up

• After the Revolution
• Display Name
• Soft Phones
• Pick Up Your Phone and Walk

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Any Questions?
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Voice Systems Overview