Yealink SIP-T41S User Manual

Advanced Phone Features
179
multicast paging key or the paging list key on the phone, which allows you to send a Real Time
Transport Protocol (RTP) stream to the pre-configured multicast address(es) on specific
channel(s) without involving SIP signaling. You can also configure the phone to receive an RTP
stream from pre-configured multicast listening address(es) on specific channel(s) without
involving SIP signaling. Up to 31 multicast listening addressed and channels can be configured
on your phone.
The IP phone supports the following 31 channels:
 0: Broadcasts are sent to channel 0. Note that the Yealink IP phones running firmware
version 80 or earlier can be regarded as listening to channel 0. It is the default channel.
 1 to 25: Broadcasts are sent to channel 1 to 25. We recommend that you specify these
channels when broadcasting with Polycom IP phones which have 25 channels you can
listen to.
 26 to 30: Broadcasts are sent to channel 26 to 30. We recommend that you specify these
channels when broadcasting with Yealink IP phones running firmware version 81 or later.
The IP phone can only send and receives broadcasts to/from the listened channels. Other
channels’ broadcasts will be ignored automatically by the IP phone.
Note
Sending RTP Stream
Configuring a Multicast Paging Key
Procedure:
1. Navigate to Menu->Features->DSS Keys.
2. Select a desired line key.
3. Select Key Event from the Type field.
4. Select Multicast Paging from the Key Type field.
5. (Optional.) Enter the string that will display on the LCD screen in the Label field.
6. Enter the multicast IP address and port number (for example, 224.5.6.20:10008) in the Value
field.
The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255.
If G722 codec is used for multicast paging, the LCD screen will display an “HD” icon to indicate
that the broadcasts are using Yealink HD voice. Check with your system administrator to see if
this feature is available on your phone.
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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