caller
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... SIP configuration, referred to as the SIP "trapezoid", is
shown in Figure 1. In this diagram, a caller in domain A (UA1)
wishes to call Joe in domain ...
... communications
services, the time it takes to complete a transaction between a
caller and called party is important. Typically, the time from when
the caller initiates a call until the time the called party is
...
... caller and called party is important. Typically, the time from when
the caller initiates a call until the time the called party is
alerted should be no more than a few seconds. Given that there can
be multiple hops, each of which is doing DNS lookups ...