Yealink SIP-T48S User Manual

User Guide for the SIP-T48S IP Phone
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numbers specified in the DND Authorized Numbers field.
Note
To disable DND in phone mode:
1. Tap the DND soft key when the phone is idle.
To disable DND in custom mode:
1. Tap the DND soft key when the phone is idle.
2. Tap the desired account.
3. Tap the Off radio box of the DND Status field.
4. Tap the Save soft key to accept the change.
Call Forward
You can configure your phone to forward incoming calls to another party (static forwarding).
You can also forward calls while your phone is ringing (dynamic forwarding).
Note
Static Forwarding
Three types of static forwarding:
 Always Forward: Incoming calls are immediately forwarded.
 Busy Forward: Incoming calls are immediately forwarded if the phone is busy.
 No Answer Forward: Incoming calls are forwarded if not answered after a period of time.
You can enable/disable call forward for the phone system, or you can customize call forward for
each or all accounts. Two call forward modes:
 Phone (default): Call forward is effective for the phone system.
 Custom: Call forward can be configured for each or all accounts.
DND authorized number is configurable via web user interface only.
When the phone misses a call, a prompt window will pop up by default. If you want to disable the
feature, contact your system administrator for more information.
When the phone forwards a call, a prompt window will pop up by default. If you want to disable
the feature, contact your system administrator for more information.

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