Yealink SIP- T28P User Manual

Advanced Phone Features
113
According to the response message from the server, the IP phone will automatically
configure the BLF List keys beginning from the first unused DSS key (The default order of
BLF list keys assigned automatically is Line Key->Memory Key->Ext Key). Once any DSS
key is seized, the IP phone will skip to configure the next DSS key.
You can receive a visual or/and an audio alert (if enabled) on your phone when the
monitored user receives an incoming call. For more information, refer to Busy Lamp Field
(BLF) on page 109.
Note
You can record calls by pressing a record key on the phone. The SIP-T28P IP phone
supports record and URL record.
Two ways of call recording:
 Record: The phone sends SIP INFO message containing a specific header “Record:
on/off” to trigger a recording.
 URL Record: The phone sends HTTP URL request to trigger a recording. Contact your
system administrator for the predefined URL.
Note
To configure a record key via phone user interface:
1. Press Menu->Features->DSS Keys->(or Line Keys).
2. Select the desired DSS key.
3. Press or , or the Switch soft key to select Key Event from the Type field.
4. Press or , or the Switch soft key to select Record from the Key Type field.
Call record is not available on all servers. Contact your system administrator for more
information.
The pickup code is used in the following order of preference: BLF List Code
(Account->Advanced)>Directed Call Pickup Code (Account->Advanced)>Directed
Call Pickup Code (Features->Call Pickup). If all of them are not configured, pressing the
BLF List key will directly call the monitored user when he/she receives an incoming call.
For more information about pickup Code, refer to Call Pickup on page 101.

Yealink SIP- T28P Specifications

General

Expansion module support	Yes
Ethernet LAN (RJ-45) ports	2
Keypad number of keys	48
Voice codecs	G.711, G.722, G.723.1, G.726
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Touchscreen	-
Display resolution	320 x 160 pixels
Lines quantity	- lines
Phonebook capacity	- entries
Number of VoIP accounts	6
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	204 mm
Width	273 mm
Height	42 mm
Weight	1050 g