Yealink SIP-T41S Administrator's Guide

General Features
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General Features
This section shows you how to configure general features on Yealink phones.
Topics
Line Identification Presentation
Return Code for Refused Call
Return Code for Unanswered Call
Hide Feature Access Codes
Accept SIP Trust Server Only
100 Reliable Retransmission
SIP Session Timer
Session Timer
Reboot in Talking
Reserve # in User Name
Busy Tone Delay
CFG File Version Information
Media Loopback
Cloud
Line Identification Presentation
Yealink phones can derive calling and connected line identification from SIP headers and display the name asso-
ciated with the telephone number on the LCD screen.
Calling Line Identification Presentation (CLIP): It allows the phones to display the caller identity, derived from a SIP
header contained in the INVITE message when receiving an incoming call. Yealink phones can derive caller iden-
tity from three types of SIP header: From, P-Asserted-Identity (PAI) and Remote-Party-ID (RPID). Identity present-
ation is based on the identity in the relevant SIP header.
Connected Line Identification Presentation (COLP): It allows the phones to display the identity of the connected
party specified for outgoing calls. The phones can display the Dialed Digits, or the identity in a SIP header (Remote-
Party-ID, P-Asserted-Identity or contact) received, or the identity in the From header carried in the UPDATE mes-
sage sent by the callee as described in RFC 4916. Connected line identification presentation is also known as
Called line identification presentation. In some cases, the remote party will be different from the called line iden-
tification presentation due to call diversion.
Note: If the caller/callee already exists in the local directory, the local contact name assigned to the caller will be pref-
erentially displayed and stored in the call log.
For more information on calling line identification presentation, refer to Calling and Connected Line Identification
Presentation on Yealink IP Phones.
Topic
CLIP and COLP Configuration
CLIP and COLP Configuration
The following table lists the parameters you can use to configure the CLIP and COLP.
Parameter
account.X.cid_source
[1]
<MAC>.cfg
Description
It configures the identity of the caller.
Permitted
Values
0-FROM
1-PAI
2-PAI-FROM

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