UC921G Enterprise IP Phone

Phone Features

4 SIP accounts

Call hold, mute, DND

One-touch speed dial, hotline

Call forward, call waiting, call transfer

Redial, call return, auto answer, direct IP call 

5-way conferencing 

Group listening, SMS, emergency call

Ring tone selection/provisioning

Set date time automatically or manually

Dial plan per account

RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)

Action URL/URI

Linux Operating System

Voice Codecs Features

HD voice, HD handset, HD speaker 

Codecs: iLBC, G.722, G.711(A/μ), Opus

G.723, G.729AB, G.726-32 

DTMF: In-band, RFC 2833, SIP INFO 

Full-duplex hands-free speakerphone with AEC

VAD, AGC, CNG, AEC, PLC, AJB

Directory

Local phonebook up to 1000 entries

XML/LDAP remote phonebook 

Intelligent search method 

Phonebook search/import/export 

Call history: dialed/received/missed/forwarded

Black list

IP-PBX Features

Busy Lamp Field (BLF), bridged Line Appearance (BLA) 

Anonymous call, anonymous call rejection 

Message Waiting Indicator (MWI), voice mail

Call park, call pickup 

Intercom, paging 

Music on hold 

Hot-desking 

Display and Indicator

2.8’’ 320x240 pixel color screen with backlight  

LED for call and message waiting indication

Illuminated LEDs for line status information 

Intuitive user interface with icons and soft keys 

National language selection

Caller ID with name, number

Feature keys

4 line keys with LED

4 line keys can be programmed up to 12 Paperless DSS keys

6 feature keys: mute, headset, message, transfer, redial, speaker

4 context-sensitive “soft” keys   

5 navigation keys

Volume control keys

Interface

Dual-port Gigabit

Power over Ethernet (IEEE 802.3af), class 2

1xRJ9 (4P4C) handset port 

1xRJ9 (4P4C) headset port

Physical Features

Stand with one angle at 40°

Wall mountable

AC adapter: 100~240V input and DC 5V/1.2A output

Power consumption (PSU): 1.8~4.4W

Power consumption (PoE): 2.3~5.3W

Operating humidity: 10~95% 

Operating temperature: -10~50°C

Management

Configuration: browser/LCD-Menu/auto-provision

Auto provision via HTTP/HTTPS FTP/TFTP

Auto-provision with PnP 

Reset to factory, reboot 

Local tracing log export, system log

Phone lock for personal privacy protection

Network and Security

SIP v1 (RFC2543), v2 (RFC3261) 

SIP server/proxy redundancy

NAT Traversal: STUN mode 

DHCP/static/IEEE802.1X/open VPN

HTTP/HTTPS web server

Time and date synchronization by SNTP 

DNS-NAPTR/DNS-SRV(RFC 3263) 

QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP 

TLS(Transport Layer Security), SRTP

HTTPS certificate manager

AES encryption for configuration file

Digest authentication using MD5/MD5-sess

IPv6 supported

Packing

Qty/CTN: 15 PCS

Phone Size:138MM(L)*185MM(W)

N.W/CTN: 12.45 KG

Phonebox Size:172MM(L)*194MM(W)*86MM(H)

G.W/CTN: 13.5 KG

Carton Meas: 585MM(L)*475MM(W)*220MM(H)