560 CMR 5.10
Call Handling Procedures
The following call handling procedures shall apply to all 911 calls in the Commonwealth.
(1) Call Answering. When answering a 911 call that is delivered on a 911 line, the enhanced
911 telecommunicator shall answer the call with the following or a similar greeting: "911, this
line is recorded, Where is Your Emergency?" The enhanced 911 telecommunicator shall not
identify the PSAP as a particular agency.
When answering a call that is delivered on the two-way emergency line or the one-way
inter-PSAP line, the enhanced 911 telecommunicator shall answer the call by identifying the
PSAP by name.
The enhanced 911 telecommunicator shall verify with each 911 caller the ALI data and shall
determine the exact location to which the caller needs emergency personnel dispatched. The
need for assistance may not necessarily be at the location of the 911 caller.
(2) Call Transfer. Each primary PSAP, regional PSAP, RECC, and wireless state police PSAP
shall be permitted to transfer 911 calls to a secondary PSAP, limited secondary PSAP, regional
secondary PSAP, ringing PSAP, public safety department, or private safety department.
No caller shall be procedurally required to speak with more than three enhanced 911
telecommunicators. The three enhanced 911 telecommunicators may consist of an enhanced 911
telecommunicator at a wireless state police PSAP, an enhanced 911 telecommunicator at a
primary PSAP, regional PSAP, or RECC, and an enhanced 911 telecommunicator at a secondary
PSAP, limited secondary PSAP, regional secondary PSAP, ringing PSAP, public safety depart
ment or private safety department. Notwithstanding the foregoing, if a 911 call is inadvertently
transferred or misrouted to the wrong agency, the receiving agency shall gather the necessary
information and transfer the call or relay the information to the proper agency.
In all instances, the transferring enhanced 911 telecommunicator shall advise the caller to
stay on the line and not hang up while the call is being transferred. In all instances the
transferring enhanced 911 telecommunicator shall verify the location of the emergency prior to
transferring the call and shall stay on the line until the receiving enhanced 911 telecommunicator
acknowledges receipt of the call to verify that the transfer was successful.
A PSAP, RECC, public safety department, or private safety department that receives a
request for emergency service outside of its jurisdiction shall immediately forward the request
to the appropriate PSAP or public safety department responsible for the geographical area.
(3) Special Circumstances.
(a) TTY Calls. Primary and regional PSAPs, RECCs, wireless state police PSAPs, and
secondary PSAPs shall establish procedures to handle 911 calls from deaf and hard of
hearing individuals via TTY or any other feature that is part of the enhanced 911 equipment
that allows calls from individuals who are deaf and hard ofhearing and individuals who have
a speech disability. All PSAPs with the capability of receiving a TTY call or other modes
of communication from individuals who are deaf and hard of hearing and individuals who
have a speech disability shall test the TTY feature or other mode of communication, as
technology allows, of the enhanced 911 equipment on a regular basis and shall comply with
the ADA.
(b) A PSAP that receives TTY test calls from the Department or its designee shall
investigate all failures internally and shall provide user refresher training for failed calls that
are a result of user error by the enhanced 911 telecommunicator. All TTY equipment
problems shall be immediately reported to the enhanced 911 service provider. The
Department may request from a PSAP that experiences continued high failure rates a report
that explains the corrective measures that are being taken to address such failures.
1. Silent Calls. Upon receiving a silent call, the enhanced 911 telecommunicator shall
first confirm that the call is not coming from a TTY device. The enhanced 911
telecommunicator shall advise the caller to stay on the line and not hang up. The
enhanced 911 telecommunicator shall then test the call to determine whether the call is
a TTY call. If it is determined that the call is a TTY call, the enhanced 911
telecommunicator shall follow established TTY call handling procedures. If it is
determined that the call is not a TTY call, the enhanced 911 telecommunicator shall use
the ALI information to dispatch the appropriate emergency personnel in accordance with
local procedures. The enhanced 911 telecommunicator shall then use the silent call
procedure to attempt to communicate with the caller. All silent calls placed to 911 from
a wireline require emergency response, unless the location information is not sufficient
to allow for location of the caller. All other silent calls require emergency response in
accordance with local procedures, unless the location information is not sufficient to
allow for location of the caller.
2. Abandoned Calls and Hangup Calls. Upon receiving an abandoned call or a hangup
call, the enhanced 911 telecommunicator shall make a return call to the caller using the
ANI associated with the call. If the caller does not answer, if a messaging system is
received, if there is a busy signal, or if the caller answers and gives a vague or confusing
response, the enhanced 911 telecommunicator shall follow local procedures and dispatch
emergency personnel, unless the location information is not sufficient to allow for
location of the caller.
3. Operator Assisted Emergency Calls. All communication service providers shall
transfer operator dialed emergency calls to the 911 trunks in the correct primary or
regional PSAP territory. The ANI shall display a code identifying an operator assisted
call to the PSAP. The operator shall also announce to the PSAP an operator assisted call
and provide the ANI.
4. No ALI Record Found Assistance. The enhanced 911 service provider shall provide
a manual or electronic ALI record look up service that can be accessed by PSAP
personnel seven days a week, 24 hours a day, 365 days a year for use when a 911 call is
received with no ALI record found. The PSAP shall maintain documentation of reports
to the enhanced 911 service provider of no ALI record found.