Chapter 4 – System Location and Environment
23
Digital Trunk Line Characteristics
The ADIX-VS System supports the following digital line circuit:
ISDN Basic Rate Interface (BRI)
More information on ISDN BRI trunk card and VS-ICOTB card is provided later in this manual.
Analog Trunk Characteristics
The ADIX-VS System supports the following types of analog trunks:
Caller ID Trunks
Loop Start Trunks
Caller ID Trunk (VS-2CITK)
Minimum ring detection is 60 Vrms.
Recommended T/R current of 25 to 60 mA.
Caller ID Interface conforms to Bellcore TR-30 Specification.
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