Filter
Top Products
13
CHAPTER 3: Configuration
S1 Position 8: Carrier-Control Method
Set position 8 of switch S1 to determine whether the carrier is “constantly on”
or “controlled by RTS.” In the “controlled by RTS” setting, the Switch can
support switched-carrier, multipoint, or hardware flow-control applications.
S1-8 Carrier
Off Constantly ON (default)
On Controlled by RTS
3.1.3 C
ONFIGURATION
S
WITCH
“S2”
Use the individual positions on DIP switch S2 to set word length, signaling-
rate range, RTS/CTS delay, or 2- or 4-wire operation, as well as to control
diagnostic testing. The factory-default settings are summarized in Table 3-2
below.
Table 3-2. Switch S2 Summary
S2 Position 2: 2-Wire vs. 4-Wire Operation
Set position 2 of switch S2 to determine whether the Multi-Function LD Card
operates in 2-wire or 4-wire mode.
S2-2 Operation
Off 4-wire (full- or half-duplex) (default)
On 2-wire (half-duplex only)
Position Function Default Setting
S2-1 Not Used N/A
S2-2 2-Wire/4-Wire Off 4-Wire
S2-3 V.52, V.54 Tests Off Normal Operation
S2-4 RTS/CTS Delay On
7 ms
S2-5 RTS/CTS Delay On
S2-6 Signaling-Rate Range On -2.5 to +1%
S2-7 Word Length Off
10 bits
S2-8 Word Length Off