Administrator‘s Guide for Yealink VC110 Video Conferencing Endpoint
110
INBAND
DTMF digits are transmitted within the audio of the IP phone conversation. It uses the
same codec as your voice and is audible to conversation partners.
SIP INFO
DTMF digits are transmitted by the SIP INFO messages when the voice stream is
established after a successful SIP 200 OK-ACK message sequence. The SIP INFO
message is sent along the signaling path of the call. The SIP INFO message can transmit
DTMF digits in three ways: DTMF, DTMF-Relay and Telephone-Event.
DTMF parameters on the endpoint are described below:
Configures the DTMF type. You
can configure it for the SIP
account or SIP direct account
separately.
INBAND—DTMF digits are
transmitted in the voice
band.
RFC2833—DTMF digits are
transmitted by RTP Events
compliant to RFC 2833.
SIP INFO—DTMF digits are
transmitted by the SIP INFO
messages.
Default: INBAND
Remote Control
Web User Interface
Configures the DTMF info type
when DTMF type is set to SIP
INFO. You can configure it for the
SIP account or SIP direct account
separately.
DTMF-Relay
DTMF
Telephone-Event
Default: DTMT-Relay
Remote Control
Web User Interface
To configure DTMF type for SIP account via web user interface:
1. Click on Account->SIP Account.
2. Select the desired value from the pull-down list of DTMF Type.
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