DSL (On-Net) Latency Statistics

Verizon Business is constantly measuring the latency (speed) of core areas of its network using data collected by pings via the Internet Control Message Protocol (ICMP).

How is the data collected?

Latency is measured as the average response time from one instrumented demarcation point to another – in this case, a server.

Packet Delivery is measured based on the percentage of test packets that reach their intended destination, divided by the total number of test packets sent.

What are our targets?

Verizon Business Service Level Agreements (SLAs) provide:

Monthly latency figures of:

• 95ms or less for regional round trips within North America (for U.S. and Canada customers).

Monthly Packet Delivery figure of:

• 99 percent or greater for regional round trips within North America.

For Off-Net (backbone only), please access the IP Latency Statistics.

Verizon Business Latency Statistics (ms)
	2008					2007
On-Net (ms) (95)	-	-	-	46.415	46.622	45.872	47.09	47.69	46.722	46.639	46.95	46.357

Verizon Business Packet Delivery Statistics (%)
	2008					2007
On-Net (%) (99)	-	-	-	99.802	99.816	99.827	99.829	99.814	99.798	99.777	99.779	99.781

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SLA VSAT Statistics

Verizon Business is constantly measuring the latency (speed) of core areas of its network using data collected by pings via the Internet Control Message Protocol (ICMP).

How is the data collected?

Network Transit Delay is the round trip average monthly delay between the origination and the destination between the in-route and out-route demarcation points.

Network Packet Guarantee is measured based on the percentage of test packets that reach their intended destination, divided by the total number of test packets sent.

What are our targets?

Verizon Business Service Level Agreements (SLAs) provide:

• Network Transit Delay - 800 Msec or less for regional round trips within North America
• Network Packet Guarantee - 99% average or greater for regional round trips within North America

Network Transit Delay (ms)
	2008					2007
VSAT (ms) (800)	608	603	602	606	604	602	606	602	606	603	602	604

Network Packet Guarantee (%)
	2008					2007
VSAT (%) (99)	99.980	99.980	99.750	99.830	99.860	99.890	99.920	99.840	99.820	99.960	99.930	99.970

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Private IP Network SLA Statistics

Verizon Business is constantly measuring the performance metrics of its Private IP network utilizing a variety of tools. Following are the actual performance measurements for the past 12 months:

How is the data collected?

US Network Delay is calculated by measuring round trip transit delay between Verizon Business-designated backbone network nodes across the contiguous US PIP Network and averaging the results over a thirty day period.

US Network MOS is calculated by sampling performance scores for the EF traffic class, using the standards based E-model (ITU-T G.107), between Verizon Business-designated backbone network nodes across the contiguous US PIP Network and averaging the results over a thirty day period.

What are our targets?

The US Network Delay Service Level Standard is 36ms roundtrip or less using 64-byte packets for measurement. The US network monthly average MOS performance for EF traffic is a minimum of 4.0.

Private IP US Network Latency (ms)
	2008					2007
US Network Delay	34	34	34	34	34	34	34	35	35	35	35	34

Private IP US Network Mean Opinion Score ("MOS")
	2008					2007
US Network MOS	4.20	4.20	4.20	4.21	4.20	4.18	4.18	4.19	4.20	4.21	4.18	4.12

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