Điện Thoại IP Yealink SIP-T21 E2
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- Yealink HD Voice
- 132 x 64-pixel graphical LCD with backlight
- Two-port 10/100M Ethernet Switch
- PoE support (T21P E2)
- Opus codec support
- Up to 2 SIP accounts
- Headset support
- Wall mountable
- Simple, flexible and secure provisioning options
#
In stock
Mô tả
Audio Features
- HD voice: HD handset, HD speaker
- Wideband codec: AMR-WB (optional), Opus, G.722
- Narrowband codec: G.711(A/µ), G.729AB, G.726, iLBC
- DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO
- Full-duplex hands-free speakerphone with AEC
- VAD, CNG, AEC, PLC, AJB, AGC
Phone Features
- 2 VoIP accounts
- Call hold, mute, DND
- One-touch speed dial, hotline
- Call forward, call waiting, call transfer
- Group listening, SMS, emergency call
- Redial, call return, auto answer
- Local 3-way conferencing
- Direct IP call without SIP proxy
- Ring tone selection/import/delete
- Set date time manually or automatically
- Dial plan
- XML Browser, action URL/URI
- Integrated screenshots
- RTCP-XR, VQ-RTCPXR
- Enhanced DSS Key
Directory
- Loal phonebook up to 1000 entries
- Black list
- XML/LDAP remote phonebook
- Smart dialing
- Phonebook search/import/export
- Call history: dialed/received/missed/forwarded
IP-PBX Features
- Busy Lamp Field (BLF)
- Bridged Line Apperance (BLA)
- Anonymous call, anonymous call rejection
- Hot-desking, voice mail
- Flexible seating
- Call park, call pickup
- Executive and Assistant
- Centralized call recording
- Visual voice mail
- Call recording
Display and Indicator
- 132 x 64-pixel graphical LCD with backlight
- LED for call and message waiting indication
- Dual-color (red or green) illuminated LEDs for line status information
- Intuitive user interface with icons and soft keys
- Multilingual user interface
- Caller ID with name and number
- Power saving
Feature keys
- 2 line keys with LED
- 6 features keys: message, headset, redial, transfer, mute, hands-free speakerphone
- 6 navigation keys
- Volume control keys Interface
- 2 x RJ45 10/100M Ethernet ports
- Power over Ethernet (IEEE 802.3af), class 2 (T21P E2)
- 1 x RJ9 (4P4C) handset port
- 1 x RJ9 (4P4C) headset port
Other Physical Features
- Color: Black
- Wall mountable
- External Yealink AC adapter:AC 100~240V input and DC 5V/600mA output
- Power consumption (PSU): 0.8-1.4W
- Power consumption (PoE): 1.3-1.8W (T21P E2)
- Dimension (W*D*H*T): 209 mm*188 mm*150 mm*41 mm
- Operating humidity: 10~95%
- Operating temperature: -10~50°C (+14~122°F)
Management
- Configuration: browser/phone/auto-provision
- Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
- Auto-provision with PnP
- Zero-sp-touch, TR-069
- Phone lock for personal privacy protection
- Reset to factory, reboot
- Package tracing export, system log
Network and Security
- SIP v1 (RFC2543), v2 (RFC3261)
- Call server redundancy supported
- NAT traversal: STUN mode
- Proxy mode and peer-to-peer SIP link mode
- IP assignment: static/DHCP
- HTTP/HTTPS web server
- Time and date synchronization using SNTP
- UDP/TCP/DNS-SRV (RFC 3263)
- QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
- SRTP for voice
- Transport Layer Security (TLS)
- HTTPS certificate manager
- AES encryption for configuration file
- Digest authentication
- OpenVPN, IEEE802.1X
- IPv6
- LLDP/CDP/DHCP VLAN
- ICE
Package Features
- Package content:
– Yealink SIP-T21(P) E2 IP phone
– Handset with handset cord
– Ethernet Cable (1.5m CAT5E UTP Cable)
– Stand
– Quick Start Guide
– Power Adapter: T21 E2 (Standard)/T21P E2 (Optional) - Qty/CTN: 10 PCS
- N.W/CTN: 11.7 kg
- G.W/CTN: 12.5 kg
- Giftbox size: 215 mm*200 mm*118 mm
- Carton Meas: 615 mm*436 mm*208 mm
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