State 911 Committee Suggested Policies


Policy A:  Routing of Wireless 9-1-1 Calls
amended by ETSC on 9/26/01

It is recommended that before a cell site is activated with wireless 9-1-1 service, the PSAP/9-1-1 entity and the wireless carrier(s) shall mutually designate proper primary PSAPs to receive the calls, and default PSAPs that will receive calls if the initial designated call routing is not possible.

If there is no primary PSAP designated for the area, the wireless calls will be routed to the appropriate Michigan State Police dispatch center.

Policy B:  Transfer of Emergency Information Between Public Safety Answering Points
amended by ETSC on 9/26/01

When a Public Safety Answering Point (PSAP) or emergency dispatch agency receives information of an emergency, or possible emergency, and the location is outside of their jurisdictional boundaries, the information will be immediately relayed to the appropriate PSAP via telephone or direct radio contact, or electronic means with the capability of immediate confirmation of receipt. The information should not be sent via LEIN as this may result in critical delays.

Policy C:  Procedures for Cellular Telephone Callers Reporting an Incident in Progress
approved by ETSC on 2/2/1996


An increasing number of calls for service are from persons on mobile telephones. Because of their mobility, these people are often witnessing events as they happen, and sometimes they follow suspects themselves.

Reporting an event in progress is useful for law enforcement. However, a citizen following a suspect is subjected to potential danger. If the PSAP encourages this behavior, the PSAP could become liable for personal injuries or damage to property which result.

Therefore, the PSAP should warn a citizen not to attempt to chase a suspect.

If a caller fails to heed the warning and continues to follow a suspect, the PSAP has a responsibility to take and use the information in the best way it can.

  1. The following policy is suggested to Public Service Answering Points (PSAPs) when a mobile phone caller reports an incident in progress:
  2. Obtain the caller's name and mobile phone number (in case callback is necessary).
  3. Get all pertinent information on subject, situation, vehicles, etc.
  4. If caller is following a suspect, give the following warning:  "We cannot be responsible for your safety. We advise you not to follow anyone.  We will take care of the situation."
  5. Terminate the call if the person stops pursuing the vehicle. Make sure you have enough information to get back in contact with the caller as a witness, etc. If the caller indicates he (or she) will continue following the suspect, get a description of the caller (and vehicle, if applicable) and notify a supervisor.
  6. It will be the supervisor's decision whether to send the call to dispatch after checking with the appropriate dispatcher. Factors will include (but are not limited to) the nature of the call, the number and nature of other calls, status of available patrol cars, etc.
  7. If the call does not go to a dispatcher, continue to update the supervisor with the latest information from the caller.
  8. If the call goes to dispatch, the supervisor will assist the dispatcher by monitoring the call while the dispatcher handles radio traffic. Do not ask the caller questions which would indicate they are being encouraged to chase. However, questions for clarification of information or about the caller's safety may be asked.
  9. All operators should be alerted in case other people attempt to call about the incident, or in case the call is disconnected and the original caller calls back. (Mobile calls can often be disconnected accidentally as a vehicle moves through different areas.)

Policy D:  Transfer of Wireless 9-1-1 Calls Between Public Service Answering Points
approved by ETSC on 9/9/1994; amended by ETSC 8/1/01

 When a Public Service Answering Point (PSAP) receives a wireless telephone request for a public safety agency service, regardless if the caller is within the PSAP's boundaries, the call will be accepted and routed to the appropriate responder either by the transfer or relay method.  The caller shall not be told to call a different number.

Policy E:  Emergency Medical Services Dispatching
approved by the State 9-1-1 Committee on 9/21/10

Policy E: Emergency Services Dispatching is available as a PDF document.

Policy F: Wireless 9-1-1 Location Accuracy PSAP Policy


It is the recommendation of the ETSC that Michigan's Wireless PSAPs develop internal policies and operational procedures to oversee the accuracy of wireless 9-1-1 location data.


Recognizing that each PSAP has varied operational procedures and levels of resources, it is strongly urged that PSAPs develop an internal policy within the framework of the individual PSAP to verify Phase II wireless 9-1-1 ALI information. 


Inconsistencies in wireless 9-1-1 locations should be reported in writing to the proper wireless providers.  Unresolved accuracy issues should be referred to the State 9-1-1 Administrator.