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Yealink SIP-T48U Administrator's Guide

Yealink SIP-T48U
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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
155
Description
It configures the internal ringer text to map the keywords contained in the Alert-Info header.
Permitted
Values
String within 32 characters
Default
Blank
Web UI
T57W/T54W/T53W/T53/T48U/T46U/T43U/T42U:
Settings > Ring > Internal Ringer X
[2]
> Text
Other Phones:
Settings > Ring > Internal Ringer Text
Parameter
distinctive_ring_tones.alert_info.X.ringer
[2]
<y0000000000xx>.cfg
Description
It configures the desired ring tone for each internal ringer text.
Permitted
Values
l Integer from 1 to 10 (the digit stands for the appropriate ring tone) or ring tone name:
1 or Ring1.wav
2 or Ring2.wav
3 or Ring3.wav
4 or Ring4.wav
5 or Ring5.wav
6 or Ring6.wav
7 or Ring7.wav
8 or Ring8.wav
9 or Silent.wav
10 or Splash.wav
l Custom ring tone name (for example, Customring.wav)
Default
1
Web UI
T57W/T54W/T53W/T53/T48U/T46U/T43U/T42U:
Settings > Ring > Internal Ringer X
[2]
> File
Other Phones:
Settings > Ring > Internal Ringer File
[1]
X is the account ID. For T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G, X=1-16; for
T53W/T53/T43U/T42G/T42U/T42S, X=1-12; for T41P/T41S/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21
(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
[2]
X is the ring tone ID. X=1-10.
Ringer Device
You can use either or both the speaker and the headset as the ringer devices. You can configure which ringer
device to be used when receiving an incoming call. For example, if the ringer device is set to Headset, ring tone will
be played through your headset.
If the ringer device is set to Headset or Headset&Speaker, the headset (either a wired headset, Bluetooth headset
or USB headset) should be connected to the IP phone and the headset mode also should be activated in advance.
The USB headset is only applicable to T57W/T54W/T53W/T53/T48U/T48S/T46U/T46S/T43U/T42S/T42U/T41S
phones.
You can press the HEADSET key to activate the headset mode. For more information, refer to the Yealink phone-
specific user guide.
It is not applicable to CP920 phones.

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Yealink SIP-T48U Specifications

General IconGeneral
Handset typeWired handset
Product typeIP Phone
Product colorGray
USB 2.0 ports quantityUSB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Expansion module supportYes
Ethernet LAN (RJ-45) ports2
Display diagonal7 \
Display resolution800 x 480 pixels
Lines quantity- lines
Phonebook capacity1000 entries
Number of VoIP accounts16
Voice codecsAGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Security algorithmsAES, HTTPS, SRTP, TLS
Ethernet LAN data rates10, 100, 1000 Mbit/s
Ethernet LAN interface typeGigabit Ethernet
Front camera-
AC adapter input voltage100 - 240 V
Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)10 - 95 %
Keypad number of keys29
Number of handles included1 pc(s)
Harmonized System (HS) code85171800
Weight and Dimensions IconWeight and Dimensions
Width226 mm
Height185 mm

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