Transmission Ways Of Dtmf; Setting Dtmf Transmission Method For Sip Protocol - Yealink MeetingEye 600 Administrator's Manual

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Transmission Ways of DTMF

Three ways to transmit DTMF tones are as below: RFC2833, INBAND, SIP INFO.
RFC 2833
In-band transmission method. DTMF tones are transmitted by RTP, and the RFC 2833 packets are marked
by TeleponeEvent (RTP PayloadType). One DTMF tone consists of several RTP packets with the same
timestamps, which can be used to identify the same key. If the End bit of a RTP packet is 1, the packet is
the last DTMF tone. The default telephoneEvent is 101, but you can change it.
INBAND
In-band transmission method. DTMF tones are transmitted together with the voice band. By analyzing the
high frequency and the low frequency of the RTP packets, the device can identify the corresponding key.
SIP INFO
Out-band transmission method. DTMF tones are transmitted by SIP signaling path. The SIP INFO
message can transmit DTMF tones in three ways: DTMF, DTMF-Relay and Telephone-Event.

Setting DTMF Transmission Method for SIP Protocol

You can set the DTMF transmission method for the SIP protocol when using a SIP account, placing SIP IP
call, or logging in to Zoom, Pexip, BlueJeans, EasyMeet, or a custom third-party platform.
Procedure
1. Do one of the following:
• On your web user interface, go to Account > SIP Account/SIP IP Call.
• On your web user interface, go to Account > VC Platform > Video Conference Platform >
Platform Type > Zoom/Pexip/BlueJeans/EasyMeet/Custom.
• On your VCS,
For MeetingEye 600/MeetingEye 400, go to More > Setting > Advanced > Account > SIP IP Call.
For VC880/VC800/VC500/VC200/PVT980/PVT950, go to More > Setting > Advanced > SIP IP
Call.
For VP59, tap Setting > Advanced > SIP IP Call.
•
On your CTP20, tap
2. Configure and save the following settings:
* 0
Setting > Advanced > Account > SIP IP Call.
| Configuring the Audio Settings | 157
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