DTE to Modem
Modem to DTE Description and Interpretation
#CLS=8 Configure the modem for Voice Mode.
OK The modem agrees, and is now set up for Voice.
#BDR=16 The DTE knows that compression requires a 38,400
bits/s speed, so it forces this as the new speed.
OK This OK message is sent at 2400 bits/s, but the modem
then switches to 38,400 bits/s.
#VLS=0 This ensures that the telephone line is selected.
OK The modem agrees.
#VRA=45 The DTE allows 4.5 seconds after the third ringback
cadence is detected by the modem. The modem is in
effect assuming that the remote telephone was answered
on the third ring because no fourth ringback was
detected before the #VRA time-out. The modem enters
Online Voice Command Mode, and DTMF and answer tone
detection is enabled. (During this period, the modem
might have detected answer tone from a data mode. In
this case, the appropriate <DLE>shielded code has
to be sent prompting the DTE to pursue a data
handshake.)
#VTX The DTE has a message to send.
CONNECT The modem says: send it.
<Data> The DTE sends the message: Hi Dave. Your mother
called.
<DLE> Procedure complete.
<ETX>
VCON DTMF still active.
H The DTE has completed its forwarding task.
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