Sutron Corporation 8310 & 7310 Users Manual
8800-1125Rev. 2.7 (BETA)
12/23/2014
pg.
12
Auto power on mode
The modem enters a power-down mode when DTR is low (J3 in default 2-3 position. If in the 1-2 position, then
RTS). In this mode, the power is turned off to the modem thus conserving the 360 mW that the modem would
otherwise use. When a ring is detected on the phone line, the power is automatically turned on to the modem.
This power-on sequence takes about 3 seconds, at which time the modem will be fully active. Typically, the
modem will then answer the phone on the next ring (S0=1) to make a connection with the calling modem.
