Mitel SX-200 EL Technician's Handbook page 210

Technician's Handbook
Table 38: Copper Interface Ports
Pin
1
2
3
4
5
6
7
8
NOTE: The CIM ports are the same whether the card has a control end connection
or a peripheral end connection. Connections from the control cabinet to the
peripheral cabinet require Category 5 UTP (unshielded twisted pair) cable
with TX and RX pairs reversed.
Table 39: Maintenance Terminal and Printer Ports
Pin
1
2
3
4
5
6
7
8
9
NOTE: The RS-232 ports (Maintenance, Printer, J10, J11) are all configured as
DTE type. All backplane connections use DB-9 connectors. The pins with *
and ** are connected together on PRI maintenance ports (slots 10 and 11).
200
Signal
RX+
RX-
TX+
TX-
Signal
DTR *
RXD
TXD
DTR *
GND
DSR *
RTS **
CTS **
nc
TX+
TX-
RX+
RX-