SIP-T21P IP Phone
The Yealink SIP-T21P Entry Level Phone is built with high-quality components which make it more durable than any other phone available on the market today.
The T21P E2 supports 2 VoIP accounts along with an Open VPN, IPv6, and a redundancy server.
This IP phone is designed with Two 10/100Mbps Ethernet ports with integrated PoE (Power over Ethernet) which are ideal for extended network use.
Product Features
- Support up to 2 VoIP accounts
- Call hold, mute, DND Support
- Call waiting, call forward, call transfer
- Group listening, SMS, emergency call
- One-touch speed dial, hotline
- Local 3-way conferencing
- Direct IP call without SIP proxy
- Redial, call return, auto answer
- Ringtone selection/import/delete
- Set date time manually or automatically
- Integrated Screenshots
- Dial plan
- XML Browser, action URL/URI
- RTCP-XR
IP-PBX Features
- Busy Lamp Field (BLF)
- Anonymous call, anonymous call rejection
- Message Waiting Indicator (MWI)
- Bridged Line Appearance(BLA)
- Voice mail, call park, call pickup
- Call completion, call recording, hot-desking
- Intercom, paging, music on hold, emergency call
Display and Indicator
- LED for call and message waiting indication
- National language selection
- Dual-color (red or green) illuminated LEDs for line status information
- 132×64-pixel graphical LCD with backlight
- Intuitive user interface with icons and soft keys
- Caller ID with name, number
Product Specifications
- 2xRJ45 10/100M Ethernet ports
- 1xRJ9 (4P4C) headset port
- 1xRJ9 (4P4C) handset port
- Power over Ethernet (IEEE 802.3af), class 2
Network and Security
- SIP v1 (RFC2543), v2 (RFC3261)
- IPv6
- Proxy mode and peer-to-peer SIP link mode
- NAT transverse: STUN mode
- IP assignment: static/DHCP
- Time and date synchronization using SNTP
- HTTP/HTTPS web server
- UDP/TCP/DNS-SRV(RFC 3263)
- SRTP for voice
- Transport Layer Security (TLS)
- QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
- HTTPS certificate manager
- Digest authentication using MD5/MD5-sess
- AES encryption for the configuration file
- OpenVPN, IEEE802.1X
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