Nortel Networks 1000 - Manual (Page 392)

392 NT6D80 MSDL card
Table 157
Asynchronous interface specifications (cont’d.)
Parameter Specification Configured
Data rate 0.3, 0.6, (1.2), 2.4, 4.8, 9.6,
19.2, and 38.4 kbps Software
Stop bits 1 (default), 1.5, 2 Software
Transmission Full Duplex N/A
Interface RS-232 Software
RS-422 Switches
Mode DTE or DCE Switches
Emulation mode Each port can be configured to emulate a DCE port or a
DTE port by setting the appropriate switches on the MSDL. For details on
how to set the switches, refer to
“Installation” (page 395) of this document.
DCE is a master or controlling device that is usually the source of
information to the DTE and may provide the clock in a synchronous
transmission linking a DCE to a DTE.
DTE is a peripheral or terminal device that can transmit and receive
information to and from a DCE and normally provides a user interface to
the system or to a DCE device.
Interface Each MSDL port can be configured as an RS-232 or an RS-422
interface by setting the appropriate switches on the card.
Table 158 "RS-232 interface pin assignments" (page 392) lists the RS-232
interface specifications for EIA and CCITT standard circuits. It shows the
connector pin number, the associated signal name, and the supported
circuit type. It also indicates whether the signal originates at the DTE or
the DCE device.
This interface uses a 26-pin (SCSI II) female connector for both RS-232
and RS-422 circuits.
Table 158
RS-232 interface pin assignments
Pin Signal name
EIA
circuit
CCITT
circuit
DTE DCE
1 Frame Ground (FG) AA 102 — —
2 Transmit Data (TX) BA 103 X
3 Receive Data (RX) BB 104 X
4 Request to Send (RTS) CA 105 X
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.