MIL-HDBK-1191
11.11.3.5
Central Equipment. Central equipment panel will be located in a
communications closet nearest the area served.
11.12
AUDIOVISUAL NURSE CALL (AVNC) SYSTEM NETWORKS. Communication of
patient and staff calls for assistance will be provided from patient care
locations through combinations of tone and light signals, full duplex
intercom, digital display, and radio page.
11.12.1
AVNC System locations. AVNC systems are typically provided in
inpatient wards and emergency rooms. Networks allow each patient care unit to
operate from a local master station or transfer all nurse call functions to
any other master station on the network. Prime network capabilities include
the following:
11.12.1.1
AVNC System Features. Audiovisual nurse call (AVNC) system
networks will have the same basic feature package for standardization and to
simplify maintenance problems. Features that are not required on a particular
patient care unit will not be activated on the system installed in the unit.
11.12.1.2
Call Annunciation. Light, tone, digital display and digital radio
page annunciation of patient and staff calls for assistance will be identified
by classification, priority and origination point. Annunciation is routed to
locations to assure an appropriate and timely staff response over the most
direct route to the call origination point.
11.12.1.3
Hands Free Operation. Hands-free voice intercom from patient care
areas and staff work stations to the master station serving the unit shall be
provided once a call is established.
11.12.1.4
Device Alarms. The AVNC system shall have the capability to
transmit the signaling of alarms from an attached medical device such as an IV
pump.
11.12.1.5
Television Control. The nurse call patient station shall provide
for remote control and sound audio reception from patient TV set that is
mounted on the patient room footwall or ceiling.
11.12.1.6
Lighting Control. The patient station pillow speaker or bed rail
system shall provide control of the over bed reading and general lights.
11.12.1.7
Call Statistics. If required by the Using Service, selected
printout of operating statistics including call type, volume and response time
data shall be provided.
11.12.1.8
Access Control Interface. If required by the Using Service, an
interface with the access control system to provide annunciation on the local
nurse call system if there is an attempt to make an unauthorized entry/exit
from the unit shall be provided. This particularly applies to the pediatric
and psychiatric nursing units, nursery, and surgical suite.
11.12.1.9
Telephone System Interface. If required by the Using Service,
interconnection with the telephone system to provide for remote answering of
patient nurse calls by use of any telephone in the facility.
11.12.1.10 Patient Information Interface. Provisions shall be provided, if
required by the using service, to the facility information system hospital
patient information system.
11-13
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