Yealink SIP-T21 E2 Administrator's Guide

Configuring Audio Features
895
Parameters
Permitted Values
Default
an active call.
Web User Interface:
Features->General Information->DTMF Repetition
Phone User Interface:
None
features.dtmf.duration
Integer from 0 to
300
100
Description:
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 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. If you change this parameter, the IP
phone will reboot to make the change take effect.
Web User Interface:
None
Phone User Interface:
None
features.dtmf.volume
Integer from -33
to 0
-10
Description:
Configures the frequency level of DTMF digits (in db).
Web User Interface:
None
Phone User Interface:
None
features.dtmf.min_interval
Integer from 0 to
300
50
Description:
Configures the minimum inter-digit time (in milliseconds) between digits when a sequence
of DTMF tones is played out automatically.
Web User Interface:
None

Yealink SIP-T21 E2 Specifications

General

Brand	Yealink
Model	SIP-T21 E2
Category	IP Phone
Language	English