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COMSPHERE 3500 Series Data Service Units
3-4 January 1998 3510-A2-GN32-50
Table 3-1
(3 of 3)
3500 Series Indicators and Switches
Name FunctionDefinition
RTS (105)
2
Request-to-Send This green indicator lights when the DTE places
a positive voltage on the RTS input.
3
CTS (106)
2
Clear-to-Send This green indicator lights when the DSU places
a positive voltage on the CTS lead.
3
DSR (107)
2
Data Set Ready This green indicator lights when the DSU places
a positive voltage on the DSR lead.
3
LSD (109)
2
Line Signal Detect This green indicator lights when the DSU
detects the proper signal from the digital
network and places a positive voltage on the
LSD lead.
3
2.4/4.8 (9.6) Data Rate (SPEED) This green indicator flashes when the DSU has
been configured for a data rate of 2400 or
4800 bps.
If the indicator is steady-ON, the DSU has been
configured at 9600 bps.
19.2/38.4 (56/64) Data Rate (SPEED) This green indicator flashes when the DSU has
been configured for a data rate of 19,200 or
38,400 bps.
If the indicator is ON, the DSU has been
configured at 56,000 bps or 64,000 bps.
2
CCITT designation.
3
May light during testing in response to internal logic states.