ISDN Dual Telephony Protocol Engine
15
CMX208 Advance Information
4.7 Hardware Description
4.7.1 LED Status Indicators (LED1 to LED9, and ILFI)
LED1 (HK1)
LED2 (HK2)
LED4 (CN2)
LED8 (AR)
LED9 (CN1)
ILFI
is low when analog port 1 is off-hook, high when on-hook.
is low when analog port 2 is off-hook, high when on-hook.
is high when analog port 2 is connected to the ISDN network, low when not connected.
is pulsed high and low until the ISDN line is activated, when it remains low constantly.
is high when analog port 1 is connected to the ISDN network, low when not connected.
is high when an ISDN Link Failure is Indicated, low when the link is operational.
The functions of the LED and ILFI indicators are set out in the table below:
Pin No.
12
13
15
19
21
54
Designation
LED1
LED2
LED4
LED8
LED9
ILFI
POTS port 1
Off-Hook
~
~
ISDN Line Activated
Call Connected
ISDN Line Failure Indicator
POTS port 2
~
Off-Hook
Call Connected
ISDN Line Activated
~
ISDN Line Failure Indicator
MX-COM, Inc
4800 Bethania Station Road, Winston-Salem, NC, 27105-1201, USA
www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054
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2000 MX-COM, Inc.
Doc. # 20480214.001
2000 Chiron Technology Limited