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182 DOMINION SX USER GUIDE
Dominion SX16 and SX32 Terminal Ports
A modem should not be connected to the DSX16 and DSX32 terminal port because the Ring
Indicator (RI) signal is not present. These models have a built-in modem that can be enabled or
disabled. The modem is disabled by default.
Table 83 Dominion SX16 and SX32 Terminal Port Pinouts
DB9M PIN COLOR SIGNAL
1 Brown GND
2 Red RxD
3 Orange TxD
4 ― ―
5 Green GND
6 No Connection
7 Purple RTS
8 Gray CTS
9 Blue BUSY-Reserved for
Factory Reset Plug
Here is some additional information about the Dominion SX16 and SX32 Terminal Ports:
• Pins 1 and 9 are used to factory reset units shipped after August 2004.
• Units shipped prior to August 2004. have the DB9M port labeled RESERVED (not
TERMINAL/RESERVED), since this port was used to factory reset the unit, with a
Factory reset adapter shipped with each SX unit. Pins 1 and 6 were used for factory reset.
The reset adapters for these early units are different from the current units, which have
local port functionality.
• DSX16 and DSX32 units shipped from the factory with the SX2.2 (or higher) release
support the local port capability.
• DSX versions through SX2.5 have the local port disabled by factory default.
• In DSX3.1 or higher, the local port is enabled by default.