This excerpt taken from the GPS 10-Q filed Jun 9, 2009.
In a network, latency, a synonym for delay, is an expression of how much time it takes for a packet of data to get from one designated point to another. For the purpose of measuring the Gaps end-to-end network delay, latency is measured by sending a packet that is returned to the sender, and the round-trip time is considered the latency.
This excerpt taken from the GPS 10-K filed Mar 28, 2006.
4.A.1. End-to-End Delay Commitment.
End-to-End Delay Commitment is tailored to Gaps specific measurement locations. If the average roundtrip End-to-End Delay exceeds the Committed End-to-End Delay set forth in an agreed to Service Level Agreement, then Gap will be eligible for a Service Level Credit.
End-to-End means the network call path between originating Gap premise and terminating Gap premise, including access but excluding Gap Premises Equipment.