(AREA) -- Sprint will permanently shut down the Nextel National Network at the end of the month. Beginning at 12:01 AM EST June 30, the Nextel National Network will begin to shutdown, working westward every hour by time zone. Voice and push-to-talk calls, including calls to 9-1-1 and date service, will no longer originate from the Nextel National Network. Officials say there should be no impact to the Nationwide Sprint Network. Sprint announced plans in the fourth quarter of 2010 to phase out the iDEN Nextel National Network as part of its Network Vision plan.