Yealink SIP- T28P User Manual

User Guide for the SIP-T28P IP Phone
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4. Long press to lock the phone immediately when the phone is idle.
The LCD screen prompts “Phone locked.” and displays the icon .
You can specify the interval (in seconds) to automatically lock the phone instead of long
pressing .
To configure the interval of automatic phone lock via web user interface:
1. Click on Features->Phone Lock.
2. Enter the desired interval in the Phone Lock Time Out (0~3600s) field.
3. Click Confirm to accept the change.
Note
To unlock the phone, you must know the phone unlock PIN of the phone. The default
phone unlock PIN is “123”.
The default interval is 0 second, that is, you need to long press to lock the phone.
The interval of automatic phone lock 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