Yealink SIP-T41S User Manual

Customizing Your Phone
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If the contact is not in any group, enter the All Contacts.
3. Highlight a desired contact, and then press Option.
On the SIP-T48S/T48G IP phone, tap after the desired contact.
4. Select Add to Blacklist.
On the SIP-T48S/T48G IP phone, tap Blacklist.
A message is displayed on the LCD screen:
5. Press OK.
Adding a contact to the blacklist is configurable via web user interface at the path
Directory->Local Directory.
Adding a Contact to the Local Directory
Procedure:
1. Navigate to Menu->Directory->Blacklist.
On the SIP-T48S/T48G IP phone, you can also tap Directory->Blacklist.
2. Highlight a desired contact, and then press Option.
On the SIP-T48S/T48G IP phone, tap after the desired contact.
3. Select Add to Contact.
On the SIP-T48S/T48G IP phone, select All Contacts from the pull-down list of Group.
A message is displayed on the LCD screen (except the SIP-T48S/T48G IP phone):
4. Press OK.
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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