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does emergency (911) dispatch uses IP ?

Subject: does emergency (911) dispatch uses IP ?
From: mankamis at cisco.com (Mankamana Mishra (mankamis))
Date: Wed, 2 Jan 2019 05:47:53 +0000

Guys,
While reading CL network down impacting 911 services, was trying to get more information about how does this network looks like. From end user to center, I guess VOIP is used. Wondering what is the communication method from  Emergency service center to end units (Police, Fire or any other services). Do they also use IP ? or its Still Radio only ?  if it is IP, do they use Unicast or multicast or broadcast ?

Tried googling, but did not get much information. Any insight would be appreciated.

Thanks
Mankamana

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Follow-Ups:
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- does emergency (911) dispatch uses IP ?
  - From: SNaslund at medline.com (Naslund, Steve)

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