Yealink SIP-T48S User Manual

Advanced Phone Features
241
You can tap the icon when the phone is idle to open the dialog box, and then tap Connect.
Note
To view the voice mail via phone user interface:
1. Tap ->Message->View Voice Mail.
The touch screen displays the amount of new and old voice mails.
You can tap the account to listen to voice mails.
Message Waiting Indicator (MWI)
The SIP-T48S IP phone supports MWI when receiving a new voice message. If someone leaves
you a voice mail, you will receive a message waiting indicator. MWI will be indicated in three
ways: a warning tone, an indicator message (including a voice mail icon) on the touch screen,
and the power indicator LED slowly flashes red. This will be cleared when you retrieve all voice
mails or delete them.
The MWI service is unsolicited for some servers, so the SIP-T48S IP phone only handles the MWI
messages sent from the server. But for other servers, the MWI service is solicited, so the
SIP-T48S IP phone must enable subscription for MWI.
Note
MWI service is not available on all servers. Contact your system administrator for more
information.
Before listening to voice mails, ensure that the voice mail access code has been configured.

Yealink SIP-T48S Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Keypad illumination	Yes
Display diagonal	7 \
Display resolution	800 x 480 pixels
AC adapter input voltage	100 - 240 V
AC adapter output current	2 A
AC adapter output voltage	5 V
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Front camera	No
Voice codecs	CNG, G.711Mu, G.711a, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Lines quantity	16 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Keypad number of keys	42
Security algorithms	AES
Networking standards	IEEE 802.3af
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, HTTPS
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	225 mm
Width	266 mm
Height	185 mm
Package depth	263 mm
Package width	324 mm
Package height	128 mm