Yealink SIP-T20P User Manual

Advanced Phone Features
69
This chapter provides operating instructions for the advanced features of the SIP-T20P IP
phone. The topics include:
 Busy Lamp Field (BLF)
 BLF List
 Shared Line
 Call Recording
 Intercom
 Multicast Paging
 Music on Hold
 Automatic Call Distribution (ACD)
 Voice Mail
 Message Waiting Indicator (MWI)
If you require additional information or assistance with your new phone, contact your
system administrator.
You can use the BLF feature to monitor a specific user for status changes on the phone.
For example, you can configure a BLF key on the phone for monitoring the status of a
friend’s phone (busy or idle). When the friend picks up his phone to make a call, the BLF
key LED illuminates flashing green on your phone to indicate that the friend’s phone is in
use and busy. For more BLF key LED indications, refer to LED Instructions on page 5.
You can press a BLF key to dial out the monitored phone number when it is idle. You can
receive a visual alert and an audio alert when the monitored phone is ringing. You can
also pick up a call directly by pressing the BLF key when the monitored phone is ringing.
For more information, contact your system administrator.
To configure a BLF key via phone user interface:
1. Press .
2. Select Features->DSS Keys.
3. Select the desired DSS key.
4. Press or to select BLF from the Type field.
5. Press or to select the desired line from the Account ID field.
6. Enter the phone number you want to monitor in the Value field.

Yealink SIP-T20P Specifications

General

Keypad number of keys	31
Speakerphone	Yes
Voice codecs	G.711, G.722, G.723.1, G.726
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Touchscreen	-
Lines quantity	2 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	2
Bluetooth	No
Security algorithms	HTTPS, SSL/TLS
AC adapter input voltage	100 - 240 V
AC adapter output voltage	5 V
Power consumption (typical)	2.6 W
Operating relative humidity (H-H)	10 - 95 %
Compliance industry standards	IEEE 802.3af
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	200 mm
Width	185 mm
Height	90 mm
Weight	770 g