Setting Up Your System
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3. Enter the desired TLS SIP port in the TLS SIP Port field.
4. Click Confirm to accept the change.
To configure NAT traversal and STUN server via phone user interface:
1. Tap Settings->Advanced (default password: admin) ->Network->NAT->NAT Status.
2. Tap the On radio box in the NAT Status field.
3. Enter the IP address or the domain name of the STUN server in the STUN Server field.
4. Enter the port of the STUN server in the STUN Port field.
5. Tap to accept the change.
The phone prompts you to reboot the phone.
6. Tap OK to reboot the phone.
The settings will take effect after a reboot.
To configure NAT traversal for a specific account via phone user interface:
1. Tap Settings->Advanced (default password: admin) ->Accounts.
2. Tap the desired account.
3. Tap the NAT Status field.
4. Tap Enabled in the pop-up dialog box.
5. Tap to accept the change.
Keep Alive
IP phones can send keep-alive packets to the NAT device for keeping the communication port
open.
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