TOPEX MobiLink
IP
Preliminary Manual
packet” to the other side which uses less bandwidth and allows to be interpreted for generating
comfort noise.
DTMF Settings
Settings for sending out DTMF in VoIP calls:
This configuration area establishes the means of sending out DTMF into the VoIP calls. There are
three methods available, which may be used at the same time. Transmission of DTMF signaling can
be done in band, out of band in RTP packets, or sending out INFO messages (as digital telephone-
events).
Under the SIP protocol, the INFO method would be used for carrying of mid-call signaling information
along the session signaling path (for example to send the DTMF digits generated during a SIP
session). Check the box “SIP Info” for this way of transmitting DTMF.
When checking this “RFC 2833” options, also complete the next Parameters fields to the right
-
payload type for DTMF in RTP (according to RFC 2833)
-
redundancy payload type
-
redundancy scheme: either IETF or AAL2
5.5.3 Voice Settings
Adjust the gain (amplification) on the VoIP side of the equipment:
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