Yealink SIP- T28P User Manual

Customizing Your Phone
53
2. Select Enabled from the pull-down list of Dual-Headset.
3. Click Confirm to accept the change.
Note
There are four types of DSS keys: Memory Keys, Line Keys, Programmable Keys and Ext
Keys. The details will be introduced in the following. The use of line keys and memory
keys are almost the same. The SIP-T28P IP phone supports 10 memory keys and 6 line
keys.
You can assign predefined functionalities to the memory keys located on the right of the
phone. Memory keys allow you to have quick access to features such as recall and
voice mail. The memory key LEDs will indicate status when the keys are assigned with
particular features, such as BLF. The default key type of each memory key is N/A, which
indicates that this memory key provides no functionality until configuration.
To configure a memory key via phone user interface:
1. Press Menu->Features->DSS Keys->Memory Keys.
2. Select the desired memory key, and then press the Enter soft key.
3. Select the desired key type from the Type field.
4. (Optional.) Select the desired key event type from the Key Type field.
5. (Optional.) Select the desired account from the Account ID field.
6. (Optional.) Enter the corresponding value in the Value field.
Dual headset is configurable via web user interface only.

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