Yealink T42S Administrator's Guide

Call Features
353
Phone UI
T54S/T52S/T48S/T48G/T46S/T46G/T29G:
Menu->Features->Paging List->Edit->Address
T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:
Menu->Features->Paging List->Option->Edit->Address
[1]
X ranges from 1 to 31
Multicast Listening Group Configuration
Yealink IP phones support up to 31 groups for listening. You can assign multicast IP address with channel
for each group, and specify a label to each group to identify the phones in the group, such as All, Sales, or
HR.
The following table lists the parameters you can use to configure multicast listening group.
Parameter
multicast.listen_address.X.ip_address
[1]
<y0000000000xx>.cfg
Description
It configures the multicast address and port number that the IP phone listens to.
Example:
multicast.listen_address.1.ip_address = 224.5.6.20:10008
Note: The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255.
Permitted
Values
IP address: port
Default
Blank
Web UI
Directory->Multicast IP->Multicast Listening->Listening Address
Parameter
multicast.listen_address.X.label
[1]
<y0000000000xx>.cfg
Description
It configures the label to be displayed on the LCD screen when receiving the multicast
paging calls.
Example:
multicast.listen_address.1.label = Paging1
Permitted
Values
String within 99 characters
Default
Blank
Web UI
Directory->Multicast IP->Multicast Listening->Label
Parameter
multicast.listen_address.X.channel
[1]
<y0000000000xx>.cfg
Description
It configures the channel that the IP phone listens to.
Example:
multicast.listen_address.1.channel = 2

Yealink T42S Specifications

General

Manual	Yes
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Lines quantity	12 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	12
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Voice codecs	CNG, G.711Mu, G.711a, G.723.1, G.726, G.729ab, VAD, iLBC
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Display diagonal	2.7 \
Display resolution	192 x 64 pixels
AC adapter input voltage	100 - 240 V
AC adapter output current	1.2 A
AC adapter output voltage	5 V
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Volume control	Digital
Number of programmable keys	6
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
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

Weight and Dimensions

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