Yealink SIP-T28 User Manual

YEALINK NETWORK TECHNOLOGY CO.,LTD
www.yealink.com
Yealink SIP Phones’ Firmware Change Log
1/20
Yealink SIP IP Phones Change Log of Version 61
·Firmware Version：From x.60.0.120 To x.61.0.80
·Applicable Models：SIP-T28/T26/T22/T20/T12
·Release Date：January 15
th
, 2012
·Mainly released for Call Center field

Yealink SIP-T28 Specifications

General

Power Supply	AC 100-240V, 50/60Hz
SIP Accounts	6
Headset Port	Yes (RJ9)
HD Audio	Yes
Network	10/100 Mbps Ethernet
Audio Codec	G.711, G.729, G.722, iLBC
Protocols Supported	SIP
Ethernet Ports	2 (10/100 Mbps)
PoE Support	Yes
Voice Codecs	G.711, G.729, G.722, iLBC
Speakerphone	Yes, full-duplex
Network Ports	2 (10/100 Mbps)
Codecs	G.711, G.729, G.722, iLBC
Expansion Module Support	Yes