Installing the Model 3550 DSU
2-33550-A2-GB20-20 December 1996
496-14457-01
SWITCH 1 HINGE TAB
LOCATIONS
FRONT BEZEL
COMSPHERE 3550
SNAP
TABS
Figure 2-1. Model 3550 Hardware Switch Location (shown without a TDM/Flex)Table 2-1Model 3550 DSU Switch SettingsSwitch Position Switch Setting Function
S1-1
ON
(default) Permissive V.32 DBM transmit output level of –9 dBm
S1
-
1
Off Programmable V.32 DBM transmit level between –12 dBm and 0 dBm
ON Frame ground (FG) connected to signal ground (SG)
S1-2 Off
(default) FG connected to SG through 100 ohm resistor
ON is to the rear as you face the front of the DSU.
Off is to the front.