Yealink SIP-T5 Series Administrator's Manual page 184

Administrator's Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
Web UI Account > Advanced > DTMF Payload Type(96~127)
Parameter account.X.dtmf.info_type
It configures the DTMF info type.
Description
Note: It works only if "account.X.dtmf.type" is set to 2 (SIP INFO) or 3 (RFC2833 + SIP INFO).
1-DTMF-Relay
Permitted
2-DTMF
Values
3-Telephone-Event
Default 1
Web UI Account > Advanced > DTMF Info Type
Parameter features.dtmf.repetition
Description It configures the repetition times for the phone to send the end RTP Event packet during an active call.
Permitted
1, 2 or 3
Values
Default 3
Web UI Features > General Information > DTMF Repetition
Parameter features.dtmf.duration
It configures the duration time (in milliseconds) for each digit when a sequence of DTMF tones is
played out automatically.
Note: If the time interval between two DTMF digits is less than this value, two or more same DTMF
Description
digits could be identified as one DTMF digit. This may cause the loss of one or more DTMF digits. For
example, 2662 may be identified as 262. If so, you can modify the value of this parameter to a little
lower than the default value.
Permitted
Integer from 0 to 700
Values
Default
100
Parameter features.dtmf.volume
Description It configures the volume of the DTMF tone (in dB).
Permitted
Integer from -33 to 0
Values
Default -10
Parameter features.dtmf.min_interval
It configures the minimum inter-digit time (in milliseconds) between digits when a sequence of DTMF
Description
tones is played out automatically.
Permitted
Integer from 0 to 300
Values
Default 50
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<MAC>.cfg
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