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APPENDIX
APPENDIX 1 DCE 9Pin D Type Connector Definition
Pin
Signal Name
3
SD, Send Data
2
RD, Receive Data
7
RS, Request to Send
8
CS, Clear to Send
6
DR, Data Set Ready
5
SG, Signal Ground
1
CD, Carrier Detect
4
ER, Data Terminal Ready
9
CI, Ring Indication
Terminating Resistor Settings (DIP Switch inside Battery Compartment)
D-LINK ISDN TA DMI-128ESU+
5
4
3
2
1
9
8
7
6
Direction
DTE send data to TA
TA send data to DTE
DTE request to send data
TA inform DTE can to send data
TA is ready receiving command from DTE
TA signal ground (GND)
TA inform DTE that has a call incoming already
DTE is ready, it can working now
Incoming ring indication
Switch SW2
DIP Switch 1,2 - ON (default) =100 ohm Terminating
DIP Switch 1,2 - OFF
DIP Switch 3 - OFF (default) =N.A Keep in OFF Mode
DIP Switch 4 - OFF (default) =N.A Keep in OFF Mode
The Terminating Resistor of 100 ohm should be set in the
DMI-128ESU+, when your NT1 is set to 100 ohms, in the
point-to-point connection, between NT1 and TA.
Description
Resistor
=0 ohm Terminating
Resistor
54
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