| Thông số kỹ thuật |
| Tên thông số |
Thông số kỹ thuật |
| 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 key |
> 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 |
