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Yealink SIP-T48U Administrator's Guide

Yealink SIP-T48U
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Call Features
374
Recall Configuration
Recall, also known as last call return, allows you to dial the last received call. Recall is implemented on the phones
using a Recall key.
The following shows configuration for a Recall key.
Line Key Configuration Programmable Key Configuration
linekey.X.type = 7
linekey.X.label =Recall
programablekey.X.type = 7
After provisioning, a Recall key is available on the phone. When you press the Recall key, the phone places a call
to the phone number that last called you.
Related Topics
Line Keys Configuration
Programmable Keys Configuration
Speed Dial
Speed dial allows you to speed up dialing the contacts on the phone’s idle screen using dedicated DSS keys.
Topic
Speed Dial Key Configuration
Speed Dial Key Configuration
There are two ways to configure a Speed Dial key:
l Manually, configure a line key or programmable key as Speed Dial key.
l Automatically, assign a favorite contact, the phone automatically links the contact to a line key.
The following shows manually configuration for a Speed Dial key.
Scenario Conditions Related Topic
local_contact.favorite.enable = 0 Favorite Contacts
Line Key Configuration Programmable Key Configuration
linekey.X.type = 13
linekey.X.line = 1
linekey.X.value = 4603
linekey.X.label = Bill
programablekey.X.type = 13
programablekey.X.line = 1
programablekey.X.value = 4603
After provisioning, a Speed Dial key for Bill (4603) is available on the phone, and you can press the Speed Dial key
to call Bill (4603) quickly.
You can configure multiple Speed Dial keys for different contacts which are used frequently or hard to remember.
Alternatively, you can use favorite contact feature, and automatically assign Speed Dial keys for favorite contacts.
Related Topics
Line Keys Configuration
Programmable Keys Configuration

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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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