User Manual

Remote access
Choosing a suitable access technology
15
CM110664en_07 205 | 351
● The DSL line in parallel can be used for telephone calls.
● If you want to use telephony on the same line, you need a splitter in addition to the DSL modem.
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.
LTE & UMTS
Characteristics of LTE & UMTS:
● Can be fast
GPRS
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