SimpleSignal and BMG have teamed up to bring you an exciting and educational webinar that will show you how to build and manage WAN for voice. In this webinar, you will learn how SimpleSignal and BMG are providing partners the tools and services they need to design and manage WAN for cloud-based applications like SimpleSignal's hosted PBX. In this webinar, "Bad, Better, Best: How to Build and Manage Wide Area Networks for Voice," we will show you: - Why WAN is designed differently for voice - Which five WAN designs are typically used for voice - How to manage wide area voice networks - How to make money in the voice networking world Live recording of the webinar: http://vimeo.com/72295958

1. Bad, Better, Best
How to Build and Manage
Wide Area Networks for Voice

2. Agenda
1. Why do we design wide area networks differently for
voice?
2. How should we design wide area voice networks?
3. How should we manage voice networks?
4. How can we make money designing and managing these
networks?

3. Agenda
1. Why do we design wide area networks differently for
voice?
2. How should we design wide area voice networks?
3. How should we manage voice networks?
4. How can we make money designing and managing these
networks?

4. We design wide area networks differently for voice because
networks get congested.
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Network congestion causes problems for voice networks.

5. Router
V Packet
When too many packets arrive, the router
buffers the excess packets until there is
sufficient bandwidth to route them through.
D Packet D Packet D Packet D PacketD PacketD PacketD PacketD Packet
Buffered Packets
D Packet
D Packet
V Packet
Dropped Packets
D Packet
V Packet
D Packet
V Packet
V Packet
D Packet
When the buffer gets full, the router begins to
drop packets, causing packet loss.
Network Congestion occurs when more packets arrive than
a circuit can process at a given time.
V Packet V Packet V Packet V Packet V PacketV PacketV PacketV PacketV Packet
V Packet
D Packet
100 Mbps LAN 10 Mbps WAN
V Packet
D Packet
This buffering causes latency or delay and
jitter.

6. Router
V Packet
D Packet D Packet D Packet D PacketD PacketD PacketD PacketD Packet
Buffered Packets
D Packet
D Packet
V Packet
Dropped Packets
D Packet
V Packet
D Packet
V Packet
V Packet
D Packet
Latency, jitter, and packet loss cause
voice quality issues.
Network Congestion occurs when more packets arrive than
the router or circuit can process.
V Packet V Packet V Packet V Packet V PacketV PacketV PacketV PacketV Packet
V Packet
D Packet
100 Mbps LAN 10 Mbps WAN
V Packet
D Packet
Therefore we need to design wide area voice
networks in a way that avoids these points of
congestion.
Where data packets can be delayed or
retransmitted without causing a problem,
real-time voice get choppy and garbled.

7. Agenda
1. Why do we design wide area networks differently for
voice?
2. How should we design wide area voice networks?
3. How should we manage voice networks?
4. How can we make money designing and managing these
networks?

8. Wide area voice networks should be designed to avoid
the congestion points that cause latency, jitter, and packet
loss.
How should we design wide area voice networks?
For this presentation, I will identify the congestion points
found along three (3) commonly used network designs.
I have titled these designs: Bad, Better, and Best.

9. Bad Voice Networks have:
• One (1) Internet connection for voice & data
• 3 or 4+ points of congestion.

10. DSL Provider
Bad Design #1: Single DSL Connection
End Users 100’s of other DSL customers
ROUTER
ROUTER
ROUTER
ROUTER
Public Internet
ROUTER
ROUTER ROUTERROUTERROUTER ROUTER ROUTER
ROUTERROUTERROUTER
DSLAM
Customer
4. The 4th congestion point is the 10-20 additional routers between the end user and the
service provider on the Public Internet. These routers will not support do not support QoS.
ADSL also presents the problem of a
slower upload speed which can present
problems for bi-directional voice.
2. The 2nd point of congestion is the DSLAM, which
aggregates hundreds of independent DSL customers onto
the same Internet connection. With no voice awareness,
DSLAM’s are unable to prioritize voice over data traffic
when bandwidth utilization gets heavy.
1. With a single Internet
connection, the 1st congestion point
is the customer gateway.
4+ Points of Congestion
Simple Signal
3. The 3rd point of congestion is the handoff to
the Public Internet where again there is no CoS or
QoS to prioritize voice over data during peak
congestion periods.

11. Cable Provider
Bad Design #2: Single Cable Connection
ROUTER
ROUTER
ROUTER
Public Internet
ROUTER
ROUTER ROUTERROUTERROUTER ROUTER ROUTER
ROUTERROUTERROUTER
4. The 4th congestion point is the 10-20 additional routers between the end user and the
service provider on the Public Internet. These routers will not support do not support QoS.
2. The 2nd point of congestion happens along the shared
cable connection where hundreds of other users are added
onto the path. With no quality of service, cable connections
can not prioritize voice over data during peak congestion
periods.
100’s of Cable customers
Cable connections typically have fast download and slower
upload speeds which can present problems for bi-
directional voice. Speeds are also shared and not
guaranteed.
4+ Points of Congestion
Simple Signal
3. The 3rd point of congestion is the handoff to the Public
Internet where again there is no CoS or QoS to prioritize
voice over data during peak congestion periods.
End Users
ROUTER
Customer
1. With a single Internet
connection, the 1st congestion point
is the customer gateway.

12. DIA Provider
Bad Design #3 : Single DIA Connection
ROUTER
ROUTER
ROUTER
Public Internet
ROUTER
ROUTER ROUTERROUTERROUTER ROUTER ROUTER
ROUTERROUTERROUTER
3. The 3rd congestion point is the 10-20 additional routers between the end user and the
service provider on the Public Internet. These routers will not support do not support QoS.
2. The 2nd point of congestion is the handoff to the Public
Internet where again there is no CoS or QoS to prioritize
voice over data during peak congestion periods.
3+ Points of Congestion
Simple Signal
T-1, EoC, Fiber
No congestion along the
dedicated Internet path.
Not So
End Users
ROUTER
Customer
1. With a single Internet
connection, the 1st congestion point
is the customer gateway.

13. If you have customers who are having problems with this type of
voice network, BMG offers assessment tools to pinpoint where
congestion, packet loss, latency and jitter are being introduced.
Need Help?
We also offer bandwidth management
tools that will help you control the data
and reduce the congestion for voice.

14. Better Voice Networks have:
• One (1) Internet connection for voice
• One (1) Internet connection for data
• 2+ points of congestion.

15. Better: 2 Internet Connections
End Users
ROUTER
ROUTER
ROUTER
ROUTER
Public Internet
ROUTER
ROUTER ROUTERROUTERROUTER ROUTER ROUTER
ROUTERROUTERROUTER
Customer
2. The 2nd congestion point is the 10-20 additional routers between the end user and the
service provider on the Public Internet. These routers will not support do not support QoS.
2+ Points of Congestion
Cable Provider
Data Only
100’s of Cable customers
ROUTER ROUTER
DIA Provider
ROUTER
ROUTER
Simple Signal
No congestion at the
customer gateway.
1. The 1st point of congestion is the handoff to the Public Internet
where again there is no CoS or QoS to prioritize voice over data
during peak congestion periods.
T-1, EoC, Fiber
No congestion along the
dedicated Internet path.

16. The Best Voice Networks have:
• One (1) MPLS connection with QoS for voice & data
• An optional Internet connection for data
• 0 points of congestion.

17. End Users
ROUTER
Simple Signal MPLS Network
ROUTER
ROUTER
Simple Signal
ROUTER ROUTER
Customer
0 Points of Congestion
ROUTER Public Internet
Best: 1 MPLS Connection with QoS
Every router between the end user and the cloud service provider can be
programmed to prioritize voice over data to avoid packet loss, latency and jitter.
MPLS also reduces the number of hops or routers along the voice path.
MPLS provides for quality of service on every router,
starting with the customer gateway. This means that
even with only 1 WAN connection, voice will be
prioritized over data.
There is no competition for
bandwidth along the
dedicated MPLS path.

18. End Users
ROUTER
Simple Signal MPLS Network
ROUTER
ROUTER
Simple Signal
ROUTER ROUTER
Customer
0 Points of Congestion
Best: 1 MPLS Connection with QoS
Every router between the end user and the cloud service provider can be
programmed to prioritize voice over data to avoid packet loss, latency and jitter.
MPLS also reduces the number of hops or routers along the voice path.
There is no competition for
bandwidth along the
dedicated MPLS path.
ROUTER Public Internet
ROUTER
A 2nd Internet connection can add cheap
bandwidth for Internet browsing and
downloads, and further eliminate the
competition for bandwidth at the customer
gateway.

19. Router
V Packet
How does Quality of Service (QoS) work?
D Packet D Packet D Packet D PacketD PacketD PacketD PacketD Packet
Buffered Packets
D Packet
D Packet
D Packet
Dropped Packets
V Packet
D Packet
D Packet
D Packet
D Packet
D Packet
V Packet V Packet V Packet V Packet V PacketV PacketV PacketV PacketV Packet
D Packet
V Packet
100 Mbps LAN 10 Mbps WAN
V Packet
D Packet
When too many packets arrive at the same
time, routers programmed with QoS will use
the packet’s priority setting or tag to decide
which packets to buffer, which packets to
drop, and which packets to pass through.
Each application, switch, and router along the
path must be programmed correctly in order for
QoS to work.

20. If you have customers who want the very best for their
business, BMG offers Quality of Service (QoS) design and
implementation services.
Need Help?
BMG also offers ongoing QoS
monitoring because when
businesses add new users and
change applications, they can
cause major performance
problems for MPLS networks.
Quality of Service monitoring
keeps your customer MPLS
networks running smoothly.

21. Agenda
1. Why do we design wide area networks differently for
voice?
2. How should we design wide area voice networks?
3. How should we manage voice networks?
4. How can we make money designing and managing these
networks?

22. BMG uses sophisticated monitoring tools to measure,
design, and service wide area voice networks.
Simple Signal has installed a BMG monitoring appliance
in their data center that allows us to measure every hop
between their hosted UC platform and the users at your
customer locations.
How should we manage voice networks?
This monitoring tool will answer 5 questions that will
help you design and manage the WAN for your voice
customers.

23. This monitoring tool will answer 5 questions that will help you
design and manage the WAN for your voice customers.
A - How much bandwidth are they getting from the carrier?

24. This monitoring tool will answer 5 questions that will help you
design and manage the WAN for your voice customers.
B - How much bandwidth are they using?

25. C - Who’s using the bandwidth? What are they using it for?
This monitoring tool will answer 5 questions that will help you
design and manage the WAN for your voice customers.

26. D - Where are latency, jitter, and packet loss impacting the
network?
This monitoring tool will answer 5 questions that will help you
design and manage the WAN for your voice customers.

27. E - Is QoS set up properly across the network? Is there enough
bandwidth for each priority queue?
This monitoring tool will answer 5 questions that will help you
design and manage the WAN for your voice customers.

28. Agenda
1. Why do we design wide area networks differently for
voice?
2. How should we design wide area voice networks?
3. How should we manage voice networks?
4. How can we make money designing and managing these
networks?

29. B. Partners who offer design and management services
will differentiate themselves in the marketplace and win
more new business, especially the large hosted voice and
MPLS opportunities.
C. BMG’s WAN monitoring fixes problems and reduces the
cost of supporting customers with bad voice networks.
A. BMG pays partners 20% for all wide area network
design and management services sold.
How can we make money designing and managing these
networks?

30. Questions?
Chris Fedor
cfedor@bmgtech.net
Bandwidth Management Group
BMGTech.net
330-655-8129