Even if comparison testing isn't available, businesses should test out SIP trunks in environments that exactly simulate real network conditions and traffic, says Mitchell.
He says it's essential to carefully plan the actual rollout of SIP trunking, and to establish a reasonable schedule. Initially Finish Line planned to roll out 20 stores per day, but cut it back to 10 because the transition was just too complex. Each site was getting an MPLS upgrade to T-1, new switches and routers and new phones, and doing all that properly without disrupting regular business required time.
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