Yealink CP965 Recovery Guide

Recovery Mode on Yealink IP phones
1
Overview
This guide shows how to use recovery mode to get your phone ready when it fails to start up.
There are four recovery modes:
1. Using HTTP server
2. Using TFTP server (not applicable to CP960 IP phones)
3. Using USB flash drive (only applicable to MP54/MP56/MP58/VP59/SIP-T58A/T57W/T54W/
T53W/T53/T53C/T48U/T48S/T46U/T46S/T43U/T42U/T42S/T41S/CP920/CP960 IP phones)
4. Running backup system
Generally, when a Yealink IP phone is powered and connected to the network properly, it will start up
successfully and get ready for you to use. In case, the IP phone is accidentally powered off when
upgrading, the system data in the flash may be damaged and this makes the IP phone fail to start up.
Therefore, we strongly recommend that do not unplug or remove the power when the phone is
updating firmware or configurations.
Getting Started
Before using recovery mode to get the IP phone ready, the following steps are required:
1. Preparing the Firmware and other Resource Files
2. Configuring the HTTP Server, Configuring the TFTP Server or Connecting the USB Flash Drive to the
IP Phone
Preparing the Firmware and other Resource Files
For the firmware and other resource files, you can ask your Yealink reseller.
Different phone models require different resource files to be used for recovery mode. Some just need the
firmware, while others need extra files like “.bin” or “.rfs” in addition to the firmware.
The filename of the firmware used for recovery mode is strictly required. For example, to use recovery
mode on SIP-T46G IP phones, you must rename the firmware file as T46.rom.
For more details about the firmware name and required resource files, refer to the following table:
Phone Model
The Resource Files Required
Description
SIP-T19(P) E2
T19P_E2.rom, T19P_E2.bin, and T19P_E2.rfs
SIP-T21(P) E2
T21P_E2.rom, T21P_E2.bin, and T21P_E2.rfs
SIP-T23P/G
T2x.rom, T2X.bin, and T2X.rfs

Yealink CP965 Specifications

General

Control type	Touch
Display type	LCD
Product type	IP conference phone
Voice codecs	AGC, AJB, CNG, G.711a, G.711u, G.722, G.722.1C, G.723, G.726, G.729, G.729A, OPUS, PCMA, PLC, VAD, iLBC
Certification	CE, FCC, RoHS, REACH, ISO 9001, CCC
Product color	Black
Speaker power	5 W
Frequency range	100 - 20000 Hz
Built-in display	Yes
Display diagonal	5 \
Speaker diameter	56 mm
Bluetooth version	4.2
Display resolution	720 x 1280 pixels
Phonebook capacity	1000 entries
Top Wi-Fi standard	Wi-Fi 4 (802.11n)
Security algorithms	256-bit AES, HTTPS, MD5, WPA2, WPA3
Cable lock slot type	Kensington
Sound pressure level	94 dB
Recommended room size	Large room
Ethernet LAN data rates	10, 100 Mbit/s
Microphone pick-up range	6 m
Microphone direction type	Omnidirectional
Number of microphone arrays	1
Conference call ways quantity	10
USB version	2.0
USB connector type	USB Type-A, USB Type-C
USB ports quantity	2
Storage temperature (T-T)	-10 - 40 °C
Operating relative humidity (H-H)	10 - 90 %
Master (outer) case width	392 mm
Master (outer) case height	410 mm
Master (outer) case length	552 mm
Master (outer) case weight	9020 g
Harmonized System (HS) code	85176990
Power consumption (max)	14 W
Power consumption (Power over Ethernet (PoE))	20 W

Weight and Dimensions

Depth	322 mm
Width	328 mm
Height	62 mm
Package depth	398 mm
Package width	384 mm
Package height	105 mm