Yealink SIP-T48S User Manual

User Guide for the SIP-T48S IP Phone
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saved as *.wav files on your USB flash drive. You can also record active calls by tapping a record
key on the phone. The recordings are saved on the server.
Note
Recording Using a USB Flash Drive
You can attach a USB flash drive to your IP phone when the phone is idle or during an active call.
This feature is not available by default. For more information, contact your system administrator.
When the phone is idle, and you insert a USB flash drive into the USB port on your phone, the
phone will detect the USB flash drive and display a flashing icon . After detecting the USB
flash drive, the icon stops flashing and LCD screen prompts “USB device has been connected
successfully!”.
When there is an active call, and you insert a USB flash drive into the USB port on IP phone, the
LCD screen will prompt “USB device has been connected successfully! Available Recording Time:
XX:XX:XX”. For more information on the available recording time, refer to Viewing the Storage
Space on page 196.
Before recording any call, especially those involving PSTN, it is necessary to know about the rules
and restrictions of any governing call-recording in the place you are in. It is also very important to
have the consent of the person you are calling before recording the conversation.

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