Yealink SIP-T40G 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-T40G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Wi-Fi	No
Security algorithms	AES, HTTPS, SSL/TLS
Networking standards	IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP, TFTP, HTTP, HTTPS
Voice codecs	G.711, G.711a, G.711u, G.722, G.726, G.729ab
RJ-11 ports quantity	1
Ethernet LAN (RJ-45) ports	2
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	1.6 W
Certification	CE, FCC, ISO 9001
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 90 %
Volume control	Digital
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Lines quantity	3 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	175 mm
Width	212 mm
Height	54 mm