Yealink SIP-T48G Administrator's Manual page 654

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Web User Interface:
Settings->SIP->Local SIP Port
Phone User Interface:
None
sip.tls_listen_port
Description:
Configures the local TLS listen port.
Web User Interface:
Settings->SIP->TLS SIP Port
Phone User Interface:
None
To configure NAT traversal and STUN server via web user interface:
1. Click on Network->Advanced.
2. In the NAT block, select the desired value from the pull-down list of Active.
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 Port field.
634
Parameters Permitted Values
Integer from 1024 to
65535
Default
5061