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DTMF_RFC2833
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DTMF_SIP_INFO
Different VoIP Service providers may provide
different modes.
DTMF SIP INFO
Mode
There are
two options: send 10/11 and send * /
#
Local Port
Set sip port of each line.
Ring Type
Set ring type of each line.
Enable Via Rport
Enable/Disable system to support RFC3581. Via
rport is special way to realize SIP NAT.
Enable PRACK
Enable or disable SIP PRACK function, suggest
use the default config.
Enable Long Contact
Set more parameters in contact field; connection
with SEM server.
Convert URI
Convert # to %23 when send the URI.
Dial Without
Registered
Set call out by proxy without registration;
Ban Anonymous Call
Set to ban Anonymous Call;
Enable DNS SRV
Support DNS looking up with _sip.udp mode.
Server Type
Select the special type of server which is
encrypted, or has some unique requirements or
call flows.