Phoenix Contact 2313643, User Manual, Page: 29 / 94

Description of the technology
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3.4.4 Star structure
Figure 3-13 Star structure
3.4.5 Ring structure (firmware 3.0 or later)
As of firmware 3.0, you can create a ring structure without using a switch. With firmware 2.1,
a managed switch was still necessary.
Figure 3-14 Ring structure
There can be a maximum distance of 20 km between two devices. Up to 50 devices can be
integrated into one ring structure. If there is a ring interruption, Ethernet communication is
possible again after the following response time:
The paths of the SHDSL ring should show a very high connection quality during normal op-
eration. Otherwise the t
Recovery
may deviate from the value calculated above.
Since each device features SHDSL ports, you need only three devices for a star structure.
t
Recovery
= 600 ms + Number of devices x 100 ms
SHDSL SHDSL