C421
2.8-inch(320x240)color screen;
12 SIP accounts, HD voice;
Support 6-way audio conference;
Request a Quote
-
Specifications
C421 is a stylish and user-friendly IP phone. It features a 2.8-inch (320x240) high-definition color screen, supports 12 SIP lines, and allows for a 6-way audio conference. With rich functions such as HD audio, dual Gigabit ports, and integrated PoE, the J620G is suitable for various business application scenarios, providing users with an excellent interactive experience and comfortable instant communication services.
Certificate
- CE&FCC
-
Features
Genric
- 2.8-inch (320x240) color screen
- 12 SIP lines
- HD voice
- Dual Gigabit ports, PoE enabled
- 21 Intelligent DSS keys
- Handset / hands-free / headset mode
- Desktop Stand / Wall-mounted (optional)
- Optional external power supply
- Handset with Hall-effect Sensor Switch
Phone Functions
- Local Phonebook (1000 entries)
- Remote Phonebook (XML/LDAP)
- Call logs (In/Out/Missed, 1000 entries)
- Blocked List/Allowed List
- Screen saver (through server)
- Voice Message Waiting Indication (VMWI)
- Programmable DSS/Soft keys
- Network Time Synchronization
- Support Poly wireless headset (Through Poly APD-80 EHS Cable)
- Support Jabra wireless headset (Throug EHS20 EHS Cable)
- Support Recording (Through Server)
- Action URL / Active URI
- XML Browser
- Customize Wallpaper and Boot Logo
- uaCSTA
- Customize Incoming Call Ringtone
- Time Plan (timed reboot/timed forward/timed upgrade/timed config)
- Hidden DTMF
- Ring From Headset
- Customize DSS icon
- Customize DSS LED lights
- Customize BLF
- Customize UI Display
Call Functions
- Call out / Answer / Reject
- Mute / Unmute (Microphone)
- Call Hold / Resume
- Call Waiting
- Intercom
- Caller ID Display
- Speed Dial
- Anonymous Call (Hide Caller ID/Ban Anonymous call)
- Call Forward (Always/Busy/No Answer)
- Call Transfer (Attended/Unattended)
- Call Parking/Pick-up (Depending on server)
- Redial
- Predial
- Call Back
- Do-Not-Disturb(DND)/Timed DND
- Auto-Answering
- SIP SMS
- Voice Message
- 6-way Audio Conference
- Hot Line
- Hot Desking
- Direct IP call without SIP proxy
- Fuzzy Search Call
- Action Plan
- Dial Plan
- Call Completion/Auto Redial
- Primary and Backup SIP Servers
- Default Ext Line
- Multicast
- SIP Hotspot
Audio
- HD Voice: HD handset, HD speaker
- HAC Handset
- Wideband ADC/DAC 16KHz Sampling
- Narrowband Codec: G.711a/u, G.723.1, G.726,G.729,G.729A,G.729B,G.729AB, iLBC
- Wideband Codec: G.722, Opus
- Full-duplex Acoustic Echo Canceller (AEC)
- Voice Activity Detection (VAD) / Comfort Noise Generation (CNG) / Background Noise Estimation (BNE) / Noise Reduction (NR) / Automatic Gain Control (AGC)
- Packet Loss Concealment (PLC)
- Dynamic Adaptive Jitter Buffer
- DTMF: In-band, Out-of-Band (RFC2833/ SIP INFO)
- VQM voice quality monitoring
Network
- Physical: 10/100/1000 Mbps Ethernet, dual bridged port for PC bypass
- IP Mode: IPv4/IPv6/IPv4&IPv6
- IP Configuration: Static IP / DHCP / PPPoE
- Network Access Control: 802.1x
- VPN: L2TP / OpenVPN
- VLAN
- LLDP
- QoS
- RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
- DNS-SRV (RFC 3263)
- Support Redundant Servers
- Agent
- https Mutual Authentication
Protocols
- SIP v1 (RFC2543) v2(RFC3261)
- UDP/TCP/TLS
- RTP/RTCP/SRTP(Optional/Compulsory)
- STUN
- DHCP
- IPv6
- LLDP
- PPPoE
- 802.1x and 802.1p/Q
- L2TP
- OpenVPN
- SNTP
- FTP/TFTP
- HTTP/HTTPS
- TR-069
- AES128 & AES256
Deployment & Maintanance
- Auto-Provisioning via FTP/TFTP/HTTP/HTTPS/DHCP OPT66/SIP PNP/TR-069
- Screenshot
- Web Management Portal
- Web-based Packet Dump
- Configuration Export / Import
- Phonebook Import/Export
- Firmware Upgrade
- Syslog
- Network Firewall
- Online Upgrade
Physical Specifications
- LCD: 2.8-inch (320x240) color screen
- Keypad: 39 keys, including:
7 DSS keys + 1 page key (with LED)
5 Function keys (Contact, MWI, Mute, Headset, Redial)
4 Soft-keys
4 Navigation keys, 1 OK key
1 Return key, 1 Home key
12 Standard Phone Digits keys
2 Volume Control keys, Up/Down
1 Hands-free key - HD Handset (RJ9) x1
- Standard RJ9 Handset Cord x1
- 1.5M CAT5.E Ethernet Cable x1
- Desk Stand x1
- Status Indicator Light x1 (Red)
- RJ9 Port x2: Handset x1, Headset x1
- RJ45 Port x2: Network x1, PC x1 (Bridged to Network)
- Security Slot x1
- Power: DC5V / 1A or PoE
POE complies with the IEEE 802.3a f standard
Power adapter (optional): Input:100-240VAC~50/60Hz; Output:5V/1A -
Power Consumption (Adapter): 1.33~3.0 W
- Power Consumption (PoE): 1.9~4.6 W
- Working Temperature: 0~45℃
- Working Humidity: 10~95%
- Installation:
Desktop Stand
Wall-mounted (optional) - Color: Dark blue
- Qty/CTN: 10 PCS
- N.W/CTN:9.65 kg
- G.W/CTN:10.50 kg
- Device Dimensions:
Desktop Stand (40°): 200.0 x 175.2 x 172.6 mm
Desktop Stand (45°): 200.0 x 185.3 x 160.6 mm
Wall mountable: 200.0 x 217.7 x 70.4 mm - Gift Box Dimensions:303 x 223 x 56 mm
- Outer CTN Dimensions: 466 x 305 x 323 mm (10 PCS)
-
Download
PDF Manual
-
Use Cases
