Download Preparing Your Network for an IP PBX

Preparing Your Network for
an IP PBX
TMCU-201-1
Warren Sonnen
Director of Product Management
Epygi Technologies Ltd.
[email protected]
January 23-26, 2007• Ft. Lauderdale, Florida
Agenda
• The Basics
• Discovery & Assessment
• Is The Network Ready?
• Installation
• What Next?
January 23-26, 2007• Ft. Lauderdale, Florida
The Basics
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•
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•
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Real-Time Protocol (RTP)
Latency
Jitter
Packet Loss
Echo
Quality of Service (QOS)
Mean Opinion Score (MOS)
Layer 2 Switch
PC
PC
PC
PC
– 1.0 – 5.0
• Quality of Experience (QOE)
January 23-26, 2007• Ft. Lauderdale, Florida
The Basics
cont.
Local Area Network (LAN)
• Wide Area Network (WAN)
• Virtual LAN (VLAN / IEEE 802.1Q)
• Differentiated Services Code Points (DiffServ)
• Type of Service (TOS)
Router
• IEEE 802.1p
VLAN A
VLAN B
Layer 2 Switch
PC
PC
PC
PC
January 23-26, 2007• Ft. Lauderdale, Florida
Discovery & Assessment
• Network Topology
• Current hardware elements
• IP addressing scheme
• Large-scale data applications
• Service level agreement (SLA)
• Assessment
• Voice traffic simulation
• Metric translation
• Duplex mismatch
• Stress the network
January 23-26, 2007• Ft. Lauderdale, Florida
Discovery & Assessment
• LAN
• Voice traffic simulation
• Type of current traffic
• Traffic flows
• Link speeds
• Current network stress
cont.
• WAN
• Internet Service Provider (ISP) type
• Current usage
• Backbone congestion
• Bursting
• Link type
• Delay should be under 150 milliseconds
• Jitter buffers can resolve mild jitter - 20 to 40 ms buffer
• Packet Loss should not be less than 1%
• Mean Opinion Score (MOS) between 3.5 and 4.1 is desired
January 23-26, 2007• Ft. Lauderdale, Florida
Is The Network Ready?
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Review the baseline assessment
Have all “The Basics” been addressed?
HUBS vs. Managed Switches
Application level gateway (ALG) firewall
Make appropriate changes
Codec decision
January 23-26, 2007• Ft. Lauderdale, Florida
Is The Network Ready?
cont.
• Test it again!
• Was there an improvement?
• Did the anomaly resurface?
• Did the final simulation mimic estimated traffic
activity?
• Security
January 23-26, 2007• Ft. Lauderdale, Florida
Installation
Good Luck!
Successful Deployment
• Informed installer
• Installation plan
• Pre-staging
• Qualified/Trained
vs.
Unsuccessful Deployment
• Unknown environment
• End-user driven install
• On-site setup
• First time install
January 23-26, 2007• Ft. Lauderdale, Florida
What Next?
How important should VoIP be to the customer?
• The number ONE critical application
How can I ensure my VoIP stays #1?
• Periodic health checks
• Client PC health – Virus, Worms, SPAM, and
Spyware
• Plan new application deployments
January 23-26, 2007• Ft. Lauderdale, Florida
What Next?
cont.
Is this all free?
• Outsourcing this activity
• Managed service revenue
• Maintenance revenue
• Network assessment and diagnostic fees
January 23-26, 2007• Ft. Lauderdale, Florida
Mission Critical
or
Mission Impossible?
Warren Sonnen
Director of Product Management
Epygi Technologies Ltd.
[email protected]
January 23-26, 2007• Ft. Lauderdale, Florida