Aastra OpenCom 510 User Guide - Page 91
MS+A1-4
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Modules MS+A1-4 8.10 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 multifrequency (DTMF) dialling. ■ Ringing tone detection works at 16 2/3, 25 or 50 Hz. The analogue network terminations 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. 89