User Manual

Remote access
Choosing a suitable access technology
15
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TV cable-based access
● This access is similar to DSL. You can access the system remotely via a
cable modem provided by the cable network operator.
Other cable-based networks, such as metro ethernet
Characteristics of other cable-based networks, such as metro ethernet:
● Connections with very high bandwidth are available.
● A metro ethernet connection is usually not implemented as part of a BACS
project.
Use of mobile telephone networks
The available bandwidth is shared by an unknown number of users with an
unknown usage profile. The maximum data transfer rates that are advertised by
the mobile network operators deviate substantially from the actual data
transfer rates.
The access via a mobile network is less stable than via a cable-based network
in terms of availability and data throughput.
If you have to establish a remote access in a remote area, check the service
availability and stability. You can use the distance from the base station of the
network operator as a criterion. You can also check if there are any large
obstacles (mountains, etc.) between the base station and the building.
Characteristics of LTE & UMTS:
● Can be fast
Characteristics of GPRS:
● The speed suffices merely for tasks requiring a low bandwidth, e.g., for the
system to send an email with a small attachment.
Other RF-based access networks
Characteristics of such RF-based technologies:
● Suited for remote locations, when no DSL is available.
● There are various technologies used by the different providers. Find out
what is available at your location.
● Depending on the used frequency, transmission problems can occur during
rain or snowfall, even over short distances.
15.2 Choosing a suitable access technology
The technology depends on your intended use and the required bandwidth.
I want to use the remote access for... DSL LTE &
UMTS
GPRS TV cable Metro
ethernet
RF-based
Remote access to Desigo CC
o/+ o/+ - + + o/+
Remote access to another BACnet client
+ o o/- + + +
Connecting a Desigo system to Desigo CC
o/+ -/o - + + o/+
Alarm forwarding
+ + + + + +
Key
+ Good
o Slow but still possible
- Not possible or too slow
The different access technologies are available with different bandwidth, e.g.,
DSL (o/+) can be fast or relatively slow.
LTE & UMTS
GPRS