User`s manual

AT Command Reference Manual
3-56 1048
Example 4:
Establish a ML144/7200 data connection between two RCV288 modems in headset mode, then switch to
handset later in the session so conversation can continue after modem call is hung up. This may be typical for configuring an
interactive gaming software. Both DTEs are set at 38400 bps:
Originate Modem Answer Modem
DTE DCE DTE DCE Comments
AT&F AT&F Reset modems.
OK OK
AT-SQS=1 Select ML144 AudioSpan
modulation.
OK
AT-SMS=2,
7200,7200
AT-SMS=2,
7200,7200
Enable AudioSpan with both
DTEs choosing ML144/7200 with
audio as the connection.
OK OK
AT#VLS=5 AT#VLS=5
OK OK
ATDTxxxx Originate modem dials remote
modem.
RING
ATA DTE responds to RING by
answering.
CONNECT 38400 CONNECT 38400 AudioSpan is established and
headsets are used for
conversation.
<data> <data> Send data betweeen modems.
Users can pick up handsets to
automatically swtich to handset
modes during AudioSpan. A
conversation can continue even if
one user picks up the handset. In
this example, both users will pick
up the handset.
+++ Originate modem enters
command mode to prepare for
disconnect.
OK
ATH
NO CARRIER NO CARRIER Modems disconnect in AudioSpan
mode but handsets are still
offhook and conversation can
continue. Conversation is
terminated when both handsets
are hung up.