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Yealink SIP-T41S Administrator's Guide

Yealink SIP-T41S
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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
303
Default
0
Parameter
sip.skip_redundant_failover_addr <y0000000000xx>.cfg
Description
It enables or disables the phone only to send requests to the servers with different IP addresses when
encountering a failover.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Parameter
account.X.sip_server.Y.expires
[1][2]
<MAC>.cfg
Description
It configures the registration expiration time (in seconds) of SIP server Y for a specific account.
Permitted
Values
Integer from 30 to 2147483647
Default
3600
Web UI
Account > Register > SIP Server Y > Server Expires
Parameter
account.X.sip_server.Y.retry_counts
[1][2]
<MAC>.cfg
Description
It configures the retry times for the phone to resend requests when the SIP server Y is unavailable or
there is no response from the SIP server Y.
The phone moves to the next available server after three failed attempts.
Permitted
Values
Integer from 0 to 20
Default
3
Web UI
Account > Register > SIP Server Y > Server Retry Counts
Parameter
account.X.sip_server.Y.only_signal_with_registered
[1][2]
<MAC>.cfg
Description
It enables or disables the phone to only send requests to the registered server when encountering a
failover.
Note: It works only if “account.X.sip_server.Y.register_on_enable” is set to 1 (Enabled) and “accoun-
t.X.sip_server.Y.failback_mode is set to 1, 2 or 3.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter
account.X.sip_server.Y.invite_retry_counts
[1][2]
<MAC>.cfg
Description
It configures the number of retries attempted before sending requests to the next available server
when encountering a failover.
Permitted
Values
Integer from 1 to 10
Default
3
Parameter
account.X.sip_server.Y.failback_mode
[1][2]
<MAC>.cfg
Description
It configures the mode for the phone to retry the primary server in failover.
Note: It works only if “account.X.sip_server.Y.address” is set to the domain name of the SIP server.
Permitted
Values
0-newRequests: all requests are sent to the primary server first, regardless of the last server that was
used.
1-DNSTTL: the phone will send requests to the last registered server first. If the time defined by

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Yealink SIP-T41S Specifications

General IconGeneral
MountingDesk/Wall
Handset typeWired handset
Product typeIP Phone
Product colorBlack
Keypad illuminationYes
Wi-FiNo
Networking standardsIEEE 802.3af
Ethernet LAN data rates10, 100 Mbit/s
Ethernet LAN interface typeFast Ethernet
Supported network protocolsSIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, FTP/TFTP/HTTP/HTTPS
Volume controlDigital
Number of programmable keys6
Lines quantity6 lines
Phonebook capacity1000 entries
Dual-Tone Multi-Frequency (DTMF) modesIn-band, Out-of band, SIP info
Input frequency50/60 Hz
AC adapter input voltage100 - 240 V
AC adapter output current1.2 A
AC adapter output voltage5 V
Display diagonal2.7 \
Display resolution192 x 64 pixels
Operating temperature (T-T)-10 - 50 °C
Operating relative humidity (H-H)10 - 95 %
Voice codecsCNG, G.711Mu, G.711a, G.723.1, G.726, G.729ab, VAD, iLBC
CertificationCE
Cables includedLAN (RJ-45)
Number of handles included1 pc(s)
Harmonized System (HS) code85171800
Weight and Dimensions IconWeight and Dimensions
Depth189 mm
Width212 mm
Height175 mm
Package depth223 mm
Package width246 mm
Package height120 mm

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