Yealink SIP-T41S Administrator's Guide

Troubleshooting Methods
546
Ethernet Software Capturing Configuration
You can choose to capture the packets using the Ethernet software in two ways:
l Receiving data packets from the hub: Connect the Internet port of the IP phone and the PC to the same hub, and
then use Sniffer, Ethereal or Wireshark software to capture the signal traffic.
l Receiving data packets from PC port: Connect the Internet port of the IP phone to the Internet and the PC port of
the IP phone to a PC. Before capturing the signal traffic, make sure the phone can span data packets received
from the Internet port to the PC port. It is not applicable to CP920 phones.
Topic
Span to PC Port Configuration
Span to PC Port Configuration
The following table lists the parameter you can use to configure span to PC port.
Parameter
static.network.span_to_pc_port
[1]
<y0000000000xx>.cfg
Description
It enables or disables the phone to span data packets received from the WAN port to the PC port.
Note: It works only if “static.network.pc_port.enable” is set to 1 (Auto Negotiation).
Permitted
Values
0-Disabled
1-Enabled, all data packets from the Internet port can be received by PC port.
Default
0
Supported
Devices
All phones except CP920
Web UI
Network > Advanced > Span to PC > Span to PC Port
[1]
If you change this parameter, the phone will reboot to make the change take effect.
Watch Dog
The IP phone provides a troubleshooting feature called “Watch Dog”, which helps you monitor the IP phone status
and provides the ability to get stack traces from the last time the IP phone failed. If the Watch Dog feature is
enabled, the phone will automatically reboot when it detects a fatal failure. This feature can be configured using the
configuration files or via the web user interface.
Topic
Watch Dog Configuration

Yealink SIP-T41S Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Keypad illumination	Yes
Wi-Fi	No
Networking standards	IEEE 802.3af
Ethernet LAN data rates	10, 100 Mbit/s
Ethernet LAN interface type	Fast Ethernet
Supported network protocols	SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, FTP/TFTP/HTTP/HTTPS
Volume control	Digital
Number of programmable keys	6
Lines quantity	6 lines
Phonebook capacity	1000 entries
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Input frequency	50/60 Hz
AC adapter input voltage	100 - 240 V
AC adapter output current	1.2 A
AC adapter output voltage	5 V
Display diagonal	2.7 \
Display resolution	192 x 64 pixels
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Voice codecs	CNG, G.711Mu, G.711a, G.723.1, G.726, G.729ab, VAD, iLBC
Certification	CE
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	189 mm
Width	212 mm
Height	175 mm
Package depth	223 mm
Package width	246 mm
Package height	120 mm