Yealink SIP-T27P [377/841] Procedure
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Yealink SIP-T27P [377/841] Procedure

Yealink SIP-T27P [377/841] Procedure
Configuring Basic Features
361
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.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configuration File
<MAC>.cfg
Configure the method of
transmitting DTMF digit and the
payload type.
Parameters:
account.X.dtmf.type
account.X.dtmf.dtmf_payload
account.X.dtmf.info_type
<y0000000000xx>.cfg
Configure the number of times
for the IP phone to send the end
RTP Event packet.
Parameter:
features.dtmf.repetition
Configure the duration time for
DTMF.
Parameter:
features.dtmf.duration
Configure the frequency level
of DTMF digits.
Parameter:
features.dtmf.volume
Local
Web User Interface
Configure the method of
transmitting DTMF digits and
the payload type.
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-adv&q=load&ac
c=0
Configure the number of times
for the IP phone to send the end
RTP Event packet.
Navigate to:

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