The interval average latency first object is a metric
indicating the average period of time elapsed between the
arrival of a CONNECT message from ICM and when the call is
actually answered, on the first transfer request for the
calls. The object value also includes the average latency
computation for all the calls that have been answered on the
first transfer since system start. The first transfer in
comprehensive deployments is typically to the VXML gateway,
which will answer quickly. In call director deployments, the
first transfer may be to an agent or to another SIP endpoint
in the network, such as an automatic call distributor (ACD).
This object value calculation does not include latency for
REFER transfers.