Verilink PRISM 3301 (34-00239.5) Product Manual - Manual (Page 17)

Rear Panel Port Connections 9
This port supports only the Receive Data, Transmit Data, Data Terminal Ready, and
Data Carrier Detect leads.
Control Switch The hardware configuration is set using a dual in-line package (DIP) switch (S1)
located on the rear of the unit as shown in Figure 2-3. Each switch allows
configuring simple settings at power-up. Figure 2-4 displays the available options
and their locations on S1.
S1-1
When set to On, S1-1 forces the PRISM 3301 to perform a cold reboot at power
up. The factory default settings are loaded which deletes any customer-specific
configuration data or password information.
S1-2
When set to On, S1-2 the PRISM 3301 enters Flash download mode during a
power cycle or system reset.
S1-3
This switch is reserved.
S1-4
When set to On, S1-4 silences the audible alarm of the Alarm Cut-Off (ACO)
switch.
Table 2-3 Supported Interchange Circuits
Function Direction
Transmitted Data From DTE to DCE
Received Data From DCE to DTE
Data Terminal Ready From DTE to DCE
Data Carrier Detect From DCE to DTE
Notes:
DCE Ready is terminated and ignored.
CTS is not supported (no connection).
Ring Indicator is not supported (no connection).
✍
4 3 2 1
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On
Off
Figure 2-4 Switch S1