Mitel Aastra 470 System Manual page 131

DSI bus configuration
For each DSI interface card, in the Cards and modules view, (
can be chosen on the DSI-Bus:
• DSI-AD2:
For system phones of the Aastra 5300
units.
• DSI-DASL: For Dialog 4200 series system phones.
Depending on the line length 1 or 2 phones can be connected on each DSI-AD2 in-
terface. The following requirements apply with regard to the bus length to ensure
that the maximum permissible signal delay is not exceeded:
Tab. 59 DSI-AD2 bus length and number of phones
Number of phones Total length of DSI-AD2 bus
1 A: max. 1200 m
2 B: max. 1200 m
Communica-
tion server
Communica-
tion server
Fig. 46 DSI-AD2 bus
Notes
– The total length of the cables from the communication server to the
system phone must not be less than 10 m.
– Only one system phone and only one phone of the Dialog 4200 series
can be operated on each DSI-DASL interface. The maximum line
length for a 0.5 mm wire diameter is set at 1000 m.
1)
Office 10, Office 25, Office 35, Office 45/45pro are supported as before
Aastra 470 as of R3.2
syd-0337/1.6 – R3.2 – 09.2014
1)
series and for SB-4+ and SB-8 DECT radio
Distance between the 1st and 2nd ones Con-
nection point (without connection cable)
–
C: max. 10 m
A
1. Connection
point
B
Installation
=4g) the protocol
1. Connection
point
2. Connection
point
C
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