Yealink SIP-T41S User Manual

User Guide for T4 Series IP Phones
182
On the SIP-T48S/T48G IP phone, tap Delete.
A message is displayed on the LCD screen:
4. Press OK.
If you want to delete all paging groups, select the Delete All.
Receiving RTP Stream
You can configure the phone to receive a Real Time Transport Protocol (RTP) stream from the
pre-configured multicast address(es) and channel(s) without involving SIP signaling. Up to 31
multicast addresses and channels that the phone listens to on the network can be configured.
Note
How the phone handles incoming multicast paging calls depends on Paging Barge, Ignore DND
and Paging Priority Active configured via web user interface.
Paging Barge
Paging Barge feature defines the lowest priority of the multicast listening address from which
the phone can receive an RTP stream when there is a voice call (a normal phone call rather than
a multicast paging call) in progress. If it is disabled, all incoming multicast paging calls will be
automatically ignored. If it is set to a specify priority value, the incoming multicast paging calls
with higher or equal priority are automatically answered and the ones with lower priority are
ignored. Valid values for Paging Barge:
 1 to 31: Define the lowest priority of the multicast listening address from which the phone
can receive an RTP stream, 1 with the highest priority, 31 with the lowest.
 Disabled: The voice call in progress will take precedence over all incoming paging calls.
RTP stream is listened in the hands-free (speakerphone) mode by default. If you want to listen the
RTP stream using other engaged audio devices (speakerphone, handset or headset), contact your
system administrator for more information.
Fixed volume to play RTP stream for specified paging group is configurable by your system
administrator.
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Yealink SIP-T41S Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Keypad illumination	Yes
Wi-Fi	No
Networking standards	IEEE 802.3af
Ethernet LAN data rates	10, 100 Mbit/s
Ethernet LAN interface type	Fast Ethernet
Supported network protocols	SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, FTP/TFTP/HTTP/HTTPS
Volume control	Digital
Number of programmable keys	6
Lines quantity	6 lines
Phonebook capacity	1000 entries
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Input frequency	50/60 Hz
AC adapter input voltage	100 - 240 V
AC adapter output current	1.2 A
AC adapter output voltage	5 V
Display diagonal	2.7 \
Display resolution	192 x 64 pixels
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Voice codecs	CNG, G.711Mu, G.711a, G.723.1, G.726, G.729ab, VAD, iLBC
Certification	CE
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	189 mm
Width	212 mm
Height	175 mm
Package depth	223 mm
Package width	246 mm
Package height	120 mm