Yealink SIP-T21 E2 Administrator's Guide

Configuring Audio Features
893
Configure the number of times for the IP
phone to send the end RTP Event packet.
Navigate to:
http://<phoneIPAddress>/servlet?p=feature
s-general&q=load
Details of Configuration Parameters:
Parameters
Permitted Values
Default
account.X.dtmf.type
0, 1, 2 or 3
1
Description:
Configures the DTMF type for account X.
0-INBAND
1-RFC 2833
2-SIP INFO
3-RFC2833 + SIP INFO
If it is set to 0 (INBAND), DTMF digits are transmitted in the voice band.
If it is set to 1 (RFC 2833), DTMF digits are transmitted by RTP Events compliant to RFC
2833.
If it is set to 2 (SIP INFO), DTMF digits are transmitted by the SIP INFO messages.
If it is set to 3 (RFC2833 + SIP INFO), DTMF digits are transmitted by RTP Events compliant
to RFC 2833 and the SIP INFO messages.
X ranges from 1 to 16 (for SIP-T54S/T48G/T48S/T46G/T46S/T29G)
X ranges from 1 to 12 (for SIP-T52S/T42G/T42S)
X ranges from 1 to 6 (for SIP-T41P/T41S/T27P/T27G)
X ranges from 1 to 3 (for SIP-T40P/T40G/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)
X is equal to 1 (for SIP-T19(P) E2/CP860/CP920)
Web User Interface:
Account->Advanced->DTMF Type
Phone User Interface:
None
account.X.dtmf.dtmf_payload
Integer from 96
to 127
101
Description:
Configures the value of DTMF payload for account X.

Yealink SIP-T21 E2 Specifications

General

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