Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
411
Parameter
transfer.dsskey_deal_type <y0000000000xx>.cfg
Description
It configures the transfer mode for the DSS key. When the user presses the DSS Key during a call, the
DSS Key behavior depends on the transfer mode.
Note: This feature is only applicable to the Speed Dial key, BLF/BLF List key or Transfer key with an
assigned value.
Permitted
Values
0-New Call
1-Attended Transfer
2-Blind Transfer
4-Optional, users can choose to transfer the call via New Call, Attended Transfer or Blind Transfer
manually (not applicable to T48G/T46G/T42G/T41P/T29G phones)
Default
2
Supported
Devices
All phones except T19(P) E2 and CP920
Web UI
Features > Transfer > Transfer Mode via Dsskey
Conference
The Yealink phones support local conference and network conference.
Topics
Conference Type Configuration
Local Conference Configuration
Network Conference Configuration
Conference Type Configuration
You can specify which type of conference to establish.
The following table lists the parameter you can use to set a conference type.
Parameter
account.X.conf_type
[1]
<MAC>.cfg
Description
It configures the conference type for a specific account.
Permitted
Values
0-Local Conference
2-Network Conference
Default
0
Web UI
Account > Advanced > Conference Type
[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.
Local Conference Configuration
The local conference requires a host phone to process the audio of all parties. Yealink phones support up to 3
parties (5 parties for CP920/T42U/T43U/T53/T53W phones, 10 partes for T46U/T48U/T54W/T57W) (including your-
self) in a local conference call.
Note: Codecs that can support 10-party conference: G722, G723, G726, G729, PCMA, PCMU, and iLBC; the Opus codec can
only support 5-party conference.
The following table lists the parameters you can use to configure the local conference.

Yealink SIP-T48U Specifications

General

Handset type	Wired handset
Product type	IP Phone
Product color	Gray
USB 2.0 ports quantity	USB 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 support	Yes
Ethernet LAN (RJ-45) ports	2
Display diagonal	7 \
Display resolution	800 x 480 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
Voice codecs	AGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Security algorithms	AES, HTTPS, SRTP, TLS
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Front camera	-
AC adapter input voltage	100 - 240 V
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Keypad number of keys	29
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Width	226 mm
Height	185 mm