Yealink SIP- T28P User Manual (English)

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Basic Call Features

107

To place an anonymous call:

1. Using the specific line on the phone to place a call to phone B.

The LCD screen of phone B prompts an incoming call from anonymity.

You can use anonymous call rejection to reject incoming calls from anonymous callers.

Anonymous call rejection automatically rejects incoming calls from callers who

deliberately block their identities and numbers from being displayed. Anonymous call

rejection is configurable on a per-line basis. You can also configure the phone to send

anonymous call rejection on/off code to the server to activate/deactivate anonymous

call rejection on the server side.

To configure anonymous call rejection via phone user interface:

1. Press Menu->Features->Anonymous Call.

2. Press or , or the Switch soft key to select the desired line from the Account

ID field.

3. Press or to scroll to the Anon Reject field.

4. Press or to select Enabled from the Anon Reject field.

5. Press or to scroll to the Send rejection Code field.

6. (Optional.) Press or to select the desired value from the Send rejection

Code field.

7. (Optional.) Enter the anonymous call rejection on code and off code respectively in

the On Code and Off Code field.

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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)