Tainet T-336Cx, Руководство пользователя

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Chapter 4 General Information and Features
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4.4 Answer Mode VS. Originate Mode
While using the dial line, there must be a modem initiating the call, once the
exchange recognizes the number, it connects the circuit to the answering modem
with ring signals. Answering modem can pick up the call manually or automatically.
Afterward, it issues the answer tone to connect with the originate modem. Usually,
we call the modem which dials the call as originate mode and the other one as
answer mode. According to the role of the connection the training sequence and
working frequency band of either modem is different from each other even
operating with leased line.
With 2/4-wire full-duplex operation such as V.21, V.22, V.22bis, V.23, V.32, V.32bis,
V.34, Bell 103, and Bell 212A, there should be an originate mode and an answer
mode.
You may find the information of originate/answer settings in the “ORG/ANS
MODE” column of “CONGIF MODEM” MENU. Note that the modem will
automatically determine either mode whenever you use the “AT” commands, front
panel dialing, or auto answering.