Ericsson R320S - Page 22

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The following illustration summarises the methods that are used to switch between the three
infrared modem operating modes.
Figure 6. Methods that are used to switch between the three Infrared Modem operating modes
Power up
Off-line Command Mode
On-line Command Mode
On-line Data Mode
Exchange AT command data between
computer and Infrared Modem
Exchange data or facsimile
with a remote modem
Exchange AT command data with the
Infrared Modem while staying on-line
Lose
carrier
or
lose I.R.
link
or
press “NO”
button
(or pull
DTR low *)
Lose carrier
or
lose I.R. link
or
press “No”
button
(or pull DTR
low *)
or
ATH
+++AT <?>
(or
pull DTR low *)
Answer
ATA
ATO
Dial
ATD
<tel.
no.>
* Pull DTR not available
when using cable