Yealink SIP-T48G Administrator's Manual page 655

5. Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
6. Click OK to reboot the phone.
To configure NAT traversal for account via web user interface:
1. Click on Account->Register.
2. Select the desired account from the pull-down list of Account.
3. Select STUN from the pull-down list of NAT.
4. Click Confirm to accept the change.
To configure local SIP port and TLS SIP port via web user interface:
1. Click on Settings->SIP.
2. Enter the desired local SIP port in the Local SIP Port field.
Configuring Advanced Features
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