I noticed once that when incoming calls from the Goip4 gateway on SIP phones, not only the caller’s number is displayed, but the name “New User” flashes alternately with the phone number, which is obviously superfluous and hinders.
After viewing the Asterisk configuration files, I noticed some standard values in the /etc/asterisk/users.conf file in the general section, namely:
[general] fullname = New User
Which need to comment out:
;fullname = New User
And restart Asterisk to apply the changes:
sudo service asterisk restart
Done, now with incoming calls only the phone number will be displayed.