Mitel 430 System Manual page 121

Evaluation of an existing line installation
Line diameter: 0.5 mm
Loop resistance: 120 Ω
Fig. 43 indicates:
• Line length: 660 m
• Power available: 2120 mW
Cable Requirements
Tab. 53 Requirements for an DSI bus cable
Core pairs × cores
Stranded
Wire diameter, core
Screening
Characteristic impedance
1) Note: max. 25 m can be crossed unstranded.
(CH: Applies also to cable type G51)
Installation rules
• If an Mitel DECT radio unit is used, do not connect any other system phone to the
same DSI bus.
• Do not use any terminating resistors at the bus extremity.
• Avoid using different cable cross-sections on the same bus
• Use the supplied cables for connecting the system phones
• Cabling of AD2 terminals is restricted to pairs of a separate dedicated cable(s).
Terminals
The following system terminals can be operated on the DSI-AD2 bus:
• MiVoice 5300 series system phones
• Mitel DECT radio units
The system phones on an DSI-AD2 bus are addressed via a single-digit terminal selec-
tion digit (TSD).
Example:
The address of a system phone with TSD 2 on DSI interface 3.5 is 3.5-2.
1) Applies in Australia only
2) Office 10, Office 25, Office 35, Office 45/45pro are supported as before
Mitel 415/430 as of R4.1
syd-0580/1.2 – R4.1 – 08.2016
1 × 2 o 1 × 4
1)
yes
0.4...0.6 mm
recommended
< 130 Ω (1 MHz)
2)
Installation
1)
.
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