Yealink T27P Administrator's Guide

Administrator’s Guide for SIP-T2_Series_T4_Series IP Phones
50
IP Phone Model
Associated Firmware Name
Firmware Name Example
SIP-T42G
29.x.x.x.rom
29.80.0.20.rom
SIP-T41P
36.x.x.x.rom
36.80.0.20.rom
SIP-T29G
46.x.x.x.rom
36.80.0.20.rom
SIP-T27P
45.x.x.x.rom
45.80.0.20.rom
SIP-T23P/G
44.x.x.x.rom
44.80.0.20.rom
SIP-T21(P) E2
52.x.x.x.rom
52.80.0.20.rom
Note
Upgrade via Web User Interface
To manually upgrade firmware via web user interface, you need to store firmware to
your local system in advance.
To upgrade firmware manually via web user interface:
1. Click on Settings->Upgrade.
2. Click Browse.
3. Select firmware from the local system.
4. Click Upgrade.
A dialog box pops up to prompt “Firmware of the SIP Phone will be updated. It will
take 5 minutes to complete. Please don't power off!”.
5. Click OK to confirm the upgrade.
Note
You can download the latest firmware online:
http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.
Do not unplug the network and power cables when the IP phone is upgrading firmware.
Do not close and refresh the browser when the IP phone is upgrading firmware via web
user interface.

Yealink T27P Specifications

General

Wall Mountable	Yes
Local Phonebook	1000 entries
Bluetooth	No
Wi-Fi	No
Gigabit Ethernet	No
Display	3.66" 240x120 pixel graphical LCD with backlight
Audio Features	HD voice, Full-duplex speakerphone
Network	Dual-port 10/100 Ethernet switch
Protocols	SIP v1 (RFC2543), v2 (RFC3261)
Power	IEEE 802.3af PoE
Connectivity	2 x RJ45 10/100M Ethernet ports
Voice Codecs	G.711(A/μ), G.722, G.723, G.729AB, G.726
EHS	Supports EHS with Plantronics headsets
Headset Port	Yes
Power Adapter	5V DC (optional)