VoIP- What is the Cost of Reliability?

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VoIP- What is the Cost of Reliability? Hybrid
Phone Systems Advantages and how to avoid the
pitfalls. Presented By Eastern Telephone
Telecommunications
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What is VOIP

• Telephone service over data networks
• Transporting voice conversations via data packets
• Utilizes the ubiquitous Internet Protocol
• Hence Voice Over IP

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Benefits of VOIP

• Cost Savings for Long Distance Calls
• Converged wiring infrastructure
• Go anywhere telephone
• Connect with WAN or Internet
• Leverage Internet
• Use private WAN or public Internet

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How it works
Place Call Compress Packetize Transmit
Receive Buffer Decompress Answer
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What it is not

• Not a complete stand-alone voice solution
• Independent of other systems
• 100 guaranteed throughput

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Pure IP Network Solution
Voice Mail
TI/PRI Gateway
Call Mgr..
Analog Sta.Gateway
Analog Trunk Gateway
All switching and call processing are done by
separate control units connected over the data
network, adding unnecessary bandwidth issues.
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Reliability Issues

• Bandwidth Required vs Bandwidth Available
• Quality of Service (QoS)
• Stability of Customer Data Network
• Reputation of Installer and Equipment
• Changes to Data Network

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Some VOIP Pitfalls

• Poor Voice Quality
• Consumption of Network Bandwidth
• Security Issues
• Multiple points of failure
• Emergency 911 calls may fail

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What the Experts are saying!

• There is no one architecture (yet) that can be
  called the standard for a network phone system.
  The important thing is to follow a strategy that
  makes sense for your business.
• Trashing your PBX and going all IP immediately
  probably isnt it.
• Bill Michael - Computer Telephony

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What the Experts are saying!

• The underlying assumption regarding ToIP is that
  the LAN/WAN is always available, with minimal
  downtime. This is a very risky assumption,
  because no LAN/WAN infrastructure is currently
  designed to meet the 99.999 reliability level of
  a PBX system.
• Alan Sulkin - Telecom Industry Consultant

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The Hybrid Solution

• Builds upon proven technology
• Forward and backward compatible
• Implements architecture appropriately
• Delivers advanced features and benefits
• Provides smoothest migration
• Brings choice of technology to customers

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Hybrid Network Solution
Remote/Mobile Manager
Digital Phones
Single Line Phones
Voice Mail
Voice Mail
Voice Mail
Cabinet
Cabinet
Cabinet
IP Phones
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The Hybrid Advantage

• Integrates TDM and VOIP Telephony
• Return On Investment (ROI)
• TDM components continue working during data
  network failures
• Can integrate via T1, fiber, ATM, Frame Relay, or
  data network VOIP
• Supports analog, digital, and/or VOIP telephones
  simultaneously