They also demonstrate that digital systems provide increases in system flexibil-
ity, functionality, and scalability. Some of the advantages as well as the
deployment issues for IP-Based video surveillance systems follow.
Concerns
The move to IP-based systems for video surveillance and access control
requires substantial coordination between an organization’s security depart-
ment and the IT department. Security personnel may lack knowledge about
IP addresses, domain name servers (DNSs), port assignments and so on.
The quantity and resolution of video surveillance cameras may affect other
network traffic and the overall quality of service of the network. Also, while
IP-based systems means open and interoperable systems, equipment may use
different video encoding methods or management software solutions may be
available for only certain types of cameras.
Advantages
IP-based video surveillance leverages existing IT infrastructure and contributes
to lower cable installation costs as the number of cable contractors is reduced
and cable pathways can be shared. It reduces the quantity of cable to PTZ
cameras. It also allows for consolidation of equipment room space and envi-
ronmental support for the space. The IT infrastructure allows for improved
network security, remote system access, remote notification of events and
alarms and use of POE. Most importantly, it allows for the integration of
the video surveillance systems into other building technology systems allowing
for greater functionality between the systems.
IP-based systems have greater flexibility in image format and provide
greater image resolution and increased flexibility in configuring frame rates
and resolution for each camera. The capabilities to use wireless connectivity,
digitally zoom into an image and incorporate older analog cameras into a
system through encoders are major benefits of the digital technology.
90 Smart Building Systems for Architects, Owners, and Builders