Nortel HMS400 Installation And Configuration Manual page 24

Ensure that any cable you purchase is foil shielded for protection from EMI/RFI interference
caused by surrounding office equipment and fluorescent lights.
When connecting to the Meridian 1 XSDI (Paddle Board NT8D41BB – set as DTE) interface, the
following cables are needed:
a. NT8D93AJ (this cable supplied with the paddle board)
b. Straight-through 25-9 converter
Note: This cable must be supplied by the customer.
Again, this cabling can be purchased from many electronics or computer vendors. Ensure that any
cable you purchase is foil shielded for protection from EMI/RFI interference caused by surrounding
office equipment and fluorescent lights.
The table below outlines the standard RS-232 signals:
WIRING SIGNALS
CHASIS GROUND
TRANSMIT DATA
RECEIVE DATA
REQUEST TO SEND
CLEAR TO SEND
DATA SET READY
SIGNAL GROUND
DATA CARRIER DETECT
DATA TERMINAL READY
RING INDICATOR
Nortel Hospitality Messaging Server 400
Installation and Configuration Guide
9 Pin (female) 25 Pin
(female)
2
6
4
9
8
3
1
7
25Pin (male) 9 Pin
(female)
8
3
2
20
7
6
4
5
22
GND
TXD
RXD
RTS
CTS
DSR
SG
DCD
DTR
RI
2
3
4
5
6
7
8
20
1
2
3
4
5
6
7
8
9
DB25 DB9
1 5
2 3
3 2
4 7
5 8
6 6
7 5
8 1
20 4
22 9
April 2006
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