Yealink SIP-T48G Administrator's Manual page 114

Microsoft Lync Edition Administrator's Guide for SIP-T2_Series and T4_Series IP Phones
4. Click Upload to upload the file.
5. Click Confirm to accept the change.
The image logo screen and the idle screen are displayed alternately.
Key as send allows assigning the pound key or asterisk key as the send key. Send sound
allows the IP phone to play a key tone when a user presses the send key. Key tone
allows the IP phone to play a key tone when a user presses any key. Send sound works
only if key tone is enabled. Key tone is enabled by default.
Procedure
Key as send can be configured using the configuration files or locally.
Configuration File
102
<y0000000000xx>.cfg
Configure a send key.
Parameter:
features.key_as_send
Configure send pound key.
Parameter:
features.send_pound_key
Configure a send sound.
Parameter:
features.send_key_tone