System interfaces
49
System functions and features as of R4.1
syd-0570/1.2 – R4.1 – 08.2016
2. 2. 1. 2 DSI terminal interfaces
The digital terminal interface DSI is a proprietary, system-specific two-wire interface on
which either the AD2 protocol or DASL protocol (Mitel 470 only) is running. The DSI in-
terface is used to connect the following terminals:
•DSI-AD2:
– MiVoice 5300 series system phones (or older AD2 phones)
– Mitel DECT radio units(SB-4+, SB-8, SB-8ANT)
• DSI-DASL: Dialog 4200 series system phones (Mitel 470 only)
Fig. 19 DSI terminal interfaces
Two system phones can be connected in parallel to a terminal interface DSI-AD2. Ad-
dress allocation is done by means of a switch on the phone.
Notes:
– Only one DECT radio unit can be connected for each DSI-AD2 interface. An SB-8/SB-
8ANT radio unit with 8 call channels occupies two DSI interfaces.
– Only one system phone of the Dialog 4200 series can be operated on each DSI-DASL
interface.
The type of protocol on the DSI interface can be chosen in the cards and modules view
( =4g). The setting is always valid for the entire interface card (Mitel 470 only).
DSI
DSI
2
2
DECT cordless
phone
Communica-
tion server
System phones
DECT radio
unit
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