Yealink SIP- T28P User Manual

Customizing Your Phone
27
To change the phone unlock PIN via phone user interface:
1. Press Menu->Settings->Basic Settings->Change PIN.
2. Enter the old PIN in the Current PIN field.
3. Enter the new PIN in the New PIN field.
4. Re-enter the new password in the Confirm PIN field.
5. Press the Save soft key to accept the change or the Back soft key to cancel.
Note
To unlock the phone via phone user interface:
1. Press any locked key, the LCD screen prompts “Please Enter PIN”.
2. Enter the PIN in the Phone Unlock PIN field.
3. Press the OK soft key to unlock the phone.
The icon disappears from the LCD screen.
You can long press or wait for a period of time (if configured) to lock the
phone again.
Note
You can also unlock the phone by administrator password. When you enter the
administrator password to unlock the phone, the phone will turn to the Reset Phone PIN
screen.
The unlock PIN length must be within 15 digits.

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