Modules MS+A1-4
85
7.10 MS+A1-4
Field of Application
The MT+A1-4 provides interface card four analogue interfaces for connecting
analogue trunk lines.
The MT+A1-4 interface card can be installed in any of the slots (1 to 12) of the
OpenCom 510 (see Slots starting on page 27).
Technical Information
■ The MT+A1-4 interface card can also be installed in a slave system.
■ The MT+A1-4 interface card supports pulse dialling as well as dual-tone multi-
frequency (DTMF) dialling.
■ Ringing tone detection works at 16
2
/
3
, 25 or 50 Hz. The analogue network ter-
minations are electrically isolated. The country-specific adaption is made by
the operating software.
■ Calling line identification presentation (CLIP), the consultation feature by
means of a flash key and/or earthing key and the transmission of call data
charges are not supported.
■ The MT+A1-4 interface card runs on software acquired from the system. After
the card has been installed it will automatically load the required software.
■ No settings need to be made on the MT+A1-4 interface card.
Pin Assignment
For information on the a/b interface pin assignment, refer to a/b Ports starting on
page 48.
Indicators
There are four LEDs on the front of the MT+A1-4 interface card.
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