Yealink SIP-T27G Administrator's Guide

Call Features
416
Black-and-white Screen Phones:
Menu > Features > Paging List > Option > Edit > Channel
[1]
X ranges from 1 to 31
Multicast Listening Group Configuration
Yealink phones support up to 31 groups for listening. You can assign multicast IP address with a 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 the multicast listening group.
Parameter
multicast.listen_address.X.ip_address
[1]
<y0000000000xx>.cfg
Description
It configures the multicast address and port number that the phone listens to.
Permitted
Values
IP address: port (224.0.0.1-239.255.255.255 port: 0-65535)
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 phone screen when receiving the multicast paging calls.
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 phone listens to.
Permitted
Values
0-the phone can receive an RTP stream of the pre-configured multicast address from the phones run-
ning old firmware version, from the phones listen to the channel 0, or from the available third-party
devices.
1 to 25-the phone can receive an RTP stream of the pre-configured multicast address on the channel
1 to 25 respectively from Yealink or Polycom phones.
26 to 30-the phone can receive the RTP stream of the pre-configured multicast address on the chan-
nel 26 to 30 respectively from Yealink phones.
Default
0
Web UI
Directory > Multicast IP > Multicast Listening > Channel
[1]
X ranges from 1 to 31.
Multicast Paging Settings
You can configure some general settings for multicast paging, for example, specify a codec, configure the volume
and audio device for listening to a paging call.
By default, all the listening groups are considered with a certain priority from 1 (lower priority) to 31 (higher priority).
If you neither want to receive some paging calls nor miss urgent paging calls when there is a voice call or paging
call, or when DND is activated, you can use the priority to define how your phone handles different incoming paging
calls.

Yealink SIP-T27G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black, Gold
Wall mountable	Yes
Display diagonal	3.66 \
Display resolution	240 x 120 pixels
RJ-9 ports quantity	2
USB 2.0 ports quantity	1
Voice codecs	CNG, G.711, G.722, G.723.1, G.726, G.729, G.729ab, VAD, iLBC
Dual-Tone Multi-Frequency (DTMF) modes	SIP info
Lines quantity	8 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
Bluetooth	-
Security algorithms	AES, MD5
Networking standards	IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Volume control	Digital
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	210 mm
Width	265 mm
Height	170.5 mm