Yealink SIP-T48G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
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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. Press Menu->Settings->Advanced Settings (default password: admin)
->Network->NAT->NAT Status.
2. Press or , or the Switch soft key to select the desired value from 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 Port field.
5. Press the Save soft key to accept the change.
The IP phone reboots automatically to make settings effective after a period of time.
To configure NAT traversal for a specific account via phone user interface:
1. Press Menu->Settings->Advanced Settings (default password: admin) ->Accounts.
2. Press or to select the desired account and press the Enter soft key.
3. Press or , or the Switch soft key to select the desired value from the NAT
Status field.
4. Press the Save soft key to accept the change.
IP phones can send keep-alive packets to NAT device for keeping the communication
port open.

Yealink SIP-T48G Specifications

General

Expansion module support	Yes
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Volume control	-
Display diagonal	7 \
Display resolution	800 x 480 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
AC adapter input voltage	100 - 240 V
Number of handles included	1 pc(s)

Weight and Dimensions

Width	266 mm
Height	185 mm