Yealink SIP-T48S User Manual

User Guide for the SIP-T48S IP Phone
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2. In the Upload Ringtone field, click Browse to locate a ring tone file (the file format must
be *.wav) from your local system.
3. Click Upload to upload the file.
The custom ring tone appears in the pull-down list of Ring Type.
You can only delete the custom ring tone by clicking Del when selecting the desired custom
ring tone in the Ring Type field.
Note
Key Tone
If you enable key tone, the phone will produce a sound when you press the keypad.
To configure key tone via phone user interface:
1. Tap ->Basic->Sound->Key Tone.
The priority of ring tone for an incoming call on the phone is as follows:
Contact ring tone (refer to Adding Groups) >Group ring tone (refer to Adding Groups) >Account
ring tone >Phone ring tone.
Single custom ring tone file must be within 8MB and total custom ring tone files must be within
20MB.
Uploading custom ring tones for your phone is configurable via web user interface only.

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