Yealink SIP- T28P User Manual

Enterprise IP Phone Using the Advanced Phone Functions
Using the Advanced Phone Functions
Account Setting
Please refer to the previous part “Configuration and Registration” for the basic Account
setting information. The following table lists the instruction of the field about the
advanced Account Setting.
Field Name Description
UDP Keep-alive
Message
Defines whether to active the phone UDP Keep-alive
mechanism. The default is Enabled.
UDP Keep-alive
Interval
This parameter specifies how often the phone will send a packet
to the SIP server. Default is 30 seconds.
Login Expire This parameter specifies the time frequency that phone
refreshes its registration. The default interval is 3600 seconds.
Local SIP Port Local SIP port. The default value is 5060.
Local RTP Port Defines the local RTP port that the phone will listen and
transmit. The default value is 11780.
RPort The parameter allows you configuring the proxy to send
responses back to a particular address and port. The default is
disabled.
SIP Session Timer This document defines an extension to the Session Initiation
Protocol (SIP). This extension allows for a periodic refresh of
SIP sessions through a re-INVITE or UPDATE request. The
refresh allows both user agents and proxies to determine if the
SIP session is still active.
Subscribe
Period
This parameter could set the period of the subscription. The
default value is 3600.
DTMF Type Select the DTMF type.
You can only configure these settings via Web interface.
1) Choose Account.
2) Select the desired account.
3) Choose Advanced to do the relating settings.
You can consult your system administrator for more information.
- 32 -

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