Yealink SIP-T2 SERIES Administrator's Manual page 488

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Web User Interface:
Features->General Information->Suppress DTMF Display Delay
Phone User Interface:
None
To configure suppress DTMF display and suppress DTMF display delay via web user
interface:
1. Click on Features->General Information.
2. Select the desired value from the pull-down list of Suppress DTMF Display.
3. Select the desired value from the pull-down list of Suppress DTMF Display Delay.
4. Click Confirm to accept the change.
Call transfer is implemented via DTMF on some traditional servers. The IP phone sends
specified DTMF digits to the server for transferring calls to third parties.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configuration File
466
Parameters
<y0000000000xx>.cfg
Permitted Values
Configure transfer via DTMF.
Parameters:
features.dtmf.replace_tran
features.dtmf.transfer
Default