Yealink SIP-T48G Administrator's Guide

Table of Contents
xvii
Multicast Paging .......................................................................................................................... 497
Sending RTP Stream ............................................................................................................. 497
Receiving RTP Stream .......................................................................................................... 510
Call Recording ............................................................................................................................. 515
Call Recording (for SIP-T48G/T46G/T42G/T41P/T40P/T29G/T27P/T23P/T23G/T21(P) E2 IP
Phones) .................................................................................................................................. 515
Call Recording (for CP860 IP Phones) ................................................................................. 523
Hot Desking .................................................................................................................................. 523
Logon Wizard ............................................................................................................................... 531
Action URL .................................................................................................................................... 534
Action URI ..................................................................................................................................... 554
Configuring Trusted IP Address for Action URI ................................................................... 559
Scenario A - Capturing the Current Screen of the Phone ................................................. 562
Scenario B - Placing a Call via Web User Interface .......................................................... 563
Server Redundancy ..................................................................................................................... 564
Server Domain Name Resolution ........................................................................................ 578
Static DNS Cache ........................................................................................................................ 582
VLAN ............................................................................................................................................. 590
LLDP ....................................................................................................................................... 591
CDP ........................................................................................................................................ 594
Manual Configuration for VLAN .......................................................................................... 596
DHCP VLAN ........................................................................................................................... 600
VPN ................................................................................................................................................ 602
Voice Quality Monitoring ............................................................................................................ 606
RTCP-XR .................................................................................................................................. 607
VQ-RTCPXR ............................................................................................................................ 608
Quality of Service ........................................................................................................................ 625
Network Address Translation ..................................................................................................... 629
NAT Types .............................................................................................................................. 629
NAT Traversal ........................................................................................................................ 630
Keep Alive ............................................................................................................................. 636
Rport ...................................................................................................................................... 639
Real-Time Transport Protocol ....................................................................................................... 640
TR-069 Device Management ...................................................................................................... 642
IPv6 Support ................................................................................................................................. 647
Configuring Audio Features ..................................................659
Ring Tones .................................................................................................................................... 659
Distinctive Ring Tones .................................................................................................................. 664
Tones ............................................................................................................................................. 671
Voice Mail Tone ............................................................................................................................ 678
Headset Prior ............................................................................................................................... 680
Dual Headset ............................................................................................................................... 682
Sending Volume ........................................................................................................................... 683

Yealink SIP-T48G Specifications

General

Expansion module support	Yes
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Volume control	-
Display diagonal	7 \
Display resolution	800 x 480 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
AC adapter input voltage	100 - 240 V
Number of handles included	1 pc(s)

Weight and Dimensions

Width	266 mm
Height	185 mm