125
C
ABLING INTERFACES
CHAPTER 4 INSTALLATION
Depending on the line length, 1 or 2 phones can be connected on each DSI-AD2 interface. The following
requirements apply with regard to the bus length to ensure that the maximum permissible signal delay is
not exceeded:
Figure 4.31: DSI-AD2 bus
NOTE:
• The total length of the cables from the communication server to the system phone must not be less
than 10 m.
Restrictions
The maximum length of an DSI-AD2 bus is further restricted by:
• the maximum power requirements of the connected system phones and their supplementary equip-
ment. In this context the SB-4+ and SB-8 DECT radio units are also considered as system phones.
• the line resistance (depending on the line length and wire diameter)
Table 4.21:DSI-AD2 bus length and number of phones
Number of phones Total length of DSI-AD2 bus Distance between the 1st and
2nd connection point (without
connection cable)
1 A: max. 1200 m –
2 B: max. 1200 m C: max. 10 m
Table 4.22:Maximum power requirements of the system phones on the DSI bus (Sheet 1 of 2)
System phone
1
Socket Max. power input [mW]
MiVoice 5360
2
DSI-AD2 interface 900
MiVoice 5361 DSI-AD2 interface
1220
c
MiVoice 5370 DSI-AD2 interface
1220
3
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