10
Table 1. Straps S1 through S5 (1 of 2)
Switch
Selection
Position
Function
S1–1
S1– 2
S1– 3
S1– 4
S1– 5
S1– 6
—
—
R
F
R
F
R
F
R
F
See Table 2, Timing Signal Source Selection
See Table 2, Timing Signal Source Selection
Disables circuit assurance function (Default)
Enables circuit assurance function
Holds DSR lead off during LL testing
DSR lead normal during LL testing (Default)
Disables elastic store function (Default)
Enables elastic store function
Disables remote digital loopback testing (Default for 3511)
Enables remote digital loopback testing (Default for 3510)
S2–1
S2–2
S2–3
S2–4
S2–5
S2–6
—
—
—
—
R
F
R
F
See Table 3, Data Rate Selection
See Table 3, Data Rate Selection
See Table 3, Data Rate Selection
See Table 3, Data Rate Selection
Disables streaming terminal function (Default)
Enables streaming terminal function
Disables system status function (Default)
Enables system status function
S3–1
S3–2
S3–3
S3–4
S3–5
S3–6
F
R
F
R
F
R
F
R
F
R
F
R
Disables faceplate switches
Enables faceplate switches (Default)
Enables continuous control of RTS lead (Default for 3511)
Enables switched control of RTS lead (Default for 3510)
Disables control of LL through EIA-232-D Pin 18 (Default)
Enables control of LL through EIA-232-D Pin 18
Disables control of LL through CCITT V.35 Pin LL (Default)
Enables control of LL through CCITT V.35 Pin LL
Enables 64,000 bps CC scrambler function
Disables 64,000 bps CC scrambler function (Default)
Selects EIA-232-D/V.24 DTE interface (Default)
Selects CCITT V.35 DTE interface
F = Front
R = Rear
