Yealink SIP-T48S User Manual

User Guide for the SIP-T48S IP Phone
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You can also configure a DSS key as a group pickup key via phone user interface or web user
interface. Once configured, you can pick up a call by tapping the group pickup key directly. For
more information, refer to DSS Keys on page 106.
Note
Anonymous Call
You can use anonymous call to block your identity and phone number from appearing to the
called party when you call someone. For example, you want to call to consult some of the
services, but don’t want to be harassed. Anonymous call is configurable on a per-line basis. You
can also configure the phone to send anonymous call on/off code to the server to
activate/deactivate anonymous call on the server side.
Note
To configure anonymous call via phone user interface:
1. Tap ->Features->Anonymous.
2. Tap the desired line.
3. Tap the On radio box of the Local Anonymous field.
4. (Optional.) Tap the On Code or Off Code radio box of the Send Anony Code field.
5. (Optional.) Enter the anonymous call on code and off code respectively in the On Code and
Off Code field.
The phone will send the configured on code or off code depending on your selection when
you enable or disable anonymous call feature on the phone.
Anonymous call is not available on all servers. Contact your system administrator for the
anonymous call on code and off code.
The directed call pickup code and group call pickup code are predefined on the system server.
Contact your system administrator for more information.
The call pickup code configured on a per-line basis takes precedence over that configured on a
global basis.

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