Yealink SIP-T2 SERIES Administrator's Manual page 820

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Details of Configuration Parameter:
account.17.nat.rport
Description:
Enables or disables NAT Rport feature for SIP IP call.
0-Disabled
1-Enabled
2-enable direct process
Note: It is only applicable to SIP VP-T49G IP phones.
Web User Interface:
Account->SIP IP Call->RPort
Phone User Interface:
Menu->Advanced (default password: admin) ->VC Account->SIP IP Call->RPort
To configure Rport feature for SIP IP call via web user interface:
Click on Account->SIP IP Call.
1.
Select the desired value from the pull-down list of RPort.
2.
Click Confirm to accept the change.
3.
To configure Rport feature for SIP IP call via phone user interface:
Tap ->Advanced (default password: admin) ->VC Account->SIP IP Call.
1.
Tap the RPort field and then tap the desired value in the pop-up dialog box.
2.
Tap the Save soft key to accept the change.
3.
796
Parameter Permitted Values
0, 1 or 2
Default
0