Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Capturing the Packets via Web User Interface
For Yealink phones, you can export the packets file to the local system and analyze it.
Yealink devices support the following two modes for capturing the packets:
l
Normal: Export the packets file after stopping capturing.
l
Enhanced: Export the packets file while capturing.
Topics
Capturing the Packets in Enhanced Way
Capturing the Packets in Normal Way
Capturing the Packets in Enhanced Way
Procedure
1. From the web user interface, navigate to Settings > Configuration.
2. Select Enhanced from the Pcap Type drop-down menu.
3. Click Start in the Pcap Feature field to start capturing signal traffic.
4.
Reproduce the issue to get stack traces.
5. Click Stop in the Pcap Feature field to stop capturing.
6.
Select a location for saving the packets file on your local system while capturing.
Note: The steps may differ for different web browsers.
Capturing the Packets in Normal Way
Procedure
1. From the web user interface, navigate to Settings > Configuration.
2. Select Normal from the Pcap Type drop-down menu.
3. Click Start in the Pcap Feature field to start capturing signal traffic.
4.
Reproduce the issue to get stack traces.
5. Click Stop in the Pcap Feature field to stop capturing.
6. Click Export to open the file download window, and then save the file to your local system.

Yealink SIP-T48U Specifications

General

Handset type	Wired handset
Product type	IP Phone
Product color	Gray
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Expansion module support	Yes
Ethernet LAN (RJ-45) ports	2
Display diagonal	7 \
Display resolution	800 x 480 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
Voice codecs	AGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Security algorithms	AES, HTTPS, SRTP, TLS
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Front camera	-
AC adapter input voltage	100 - 240 V
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Keypad number of keys	29
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Width	226 mm
Height	185 mm