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Yealink SIP-T27G Administrator's Guide

Yealink SIP-T27G
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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
324
Local Contacts Backup
Yealink phones support storing all local contacts to a contact file named <MAC>-contact.xml. You can back up this
file to the server, avoiding data loss. Once the contacts update, the phone will automatically upload this file to the
provisioning server or a specific server. If a contact file exists on the server, this file will be overridden. The phone
will request to download the <MAC>-contact.xml file according to its MAC address from the server during auto pro-
visioning.
The contact file is named after the MAC address of the IP phone. For example, if the MAC address of an IP phone is
00156574B150, the name of the contact file is 00156574B150-contact.xml (uppercase).
Tip: MAC address, a unique 12-digit serial number is assigned to each phone. You can obtain it from the bar code on the
back of the phone.
The following table lists the parameters you can use to back up the local contacts.
Parameter
static.auto_provision.local_contact.backup.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to upload the <MAC>-contact.xml file to the server each time the con-
tacts update and download the <MAC>-contact.xml file from the server during auto provisioning.
Note: It does not affect the downloading of the contact avatar/icon files.
Permitted
Values
0-Disabled, the phone will not upload the contact file “<MAC>-contact.xml” to the server, so the IP
phone downloads the contacts in the “contact.xml from the access URL configured by the parameter
“local_contact.data.url or “local_contact.data_photo_tar.url” during auto provisioning.
1-Enabled, the phone uploads the contact file “<MAC>-contact.xml to the specific path configured by
the parameter “static.auto_provision.local_contact.backup.path” each time the contacts update; and
downloads the contacts in the “<MAC>-contact.xml according to its MAC address from the specific
path during auto provisioning.
Default
0
Parameter
static.auto_provision.local_contact.backup.path <y0000000000xx>.cfg
Description
It configures a path or URL for the phone to upload/download the <MAC>-contact.xml file.
If it is left blank, the phone connects to the provisioning server URL, and uploads/downloads the con-
tact file “<MAC>-contact.xml”.
Example:
static.auto_provision.local_contact.backup.path = http://192.168.1.20/contact
Once the contacts update, the phone will upload the contact file to the specified path
“http://192.168.1.20/contact”.
During auto provisioning, the phone downloads the contact file “<MAC>-contact.xml” from the spe-
cified path “http://192.168.1.20/contact”.
Note: It works only if “static.auto_provision.local_contact.backup.enable is set to 1 (Enabled).
Permitted
Values
String
Default
Blank
Parameter
static.auto_provision.custom.upload_method <y0000000000xx>.cfg
Description
It configures the way the phone uploads the <MAC>-local.cfg file, <MAC>-calllog.xml file or <MAC>-
contact.xml file to the provisioning server (for HTTP/HTTPS server only).
Permitted
Values
0-PUT
1-POST

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Yealink SIP-T27G Specifications

General IconGeneral
MountingDesk/Wall
Handset typeWired handset
Product typeIP Phone
Product colorBlack, Gold
Wall mountableYes
Display diagonal3.66 \
Display resolution240 x 120 pixels
RJ-9 ports quantity2
USB 2.0 ports quantity1
Voice codecsCNG, G.711, G.722, G.723.1, G.726, G.729, G.729ab, VAD, iLBC
Dual-Tone Multi-Frequency (DTMF) modesSIP info
Lines quantity8 lines
Phonebook capacity1000 entries
Number of VoIP accounts6
Bluetooth-
Security algorithmsAES, MD5
Networking standardsIEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface typeGigabit Ethernet
Volume controlDigital
Operating temperature (T-T)-10 - 50 °C
Operating relative humidity (H-H)10 - 95 %
Cables includedLAN (RJ-45)
Number of handles included1 pc(s)
Harmonized System (HS) code85171800
Weight and Dimensions IconWeight and Dimensions
Depth210 mm
Width265 mm
Height170.5 mm

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