Description
The Yealink SIP-T21P (SIP-T21P) is in stock.
The Yealink SIP-T21P is an entry-level IP desktop phone with advanced features such as HD audio and a large 5-line LCD display.
The SIP-T21 supports IP, Open VPN and a redundancy server, plus SRTP, HTTPS. Dual 10/100 Mbps Ethernet ports with built-in PoE are ideal for extended network use. It is compatible with leading IP PBX providers: Alcatel – Aastra – Avaya – 3CX – Asterisk – Sipleo
- 2 VoIP accounts, hotline, emergency call
 - Dual Ethernet ports/PoE
 - Call waiting, call transfer, call forward
 - Hold, mute, flash, auto-answer, redial
 - 3-way conference, DND, speed dial
 - Full duplex speakerphone
 - Phonebook for 1000 entries
 - Import/export, call history
 - Volume adjustment, ring tone selection
 - Tone scheme, System log
 - Multi-language (more than 20)
 - Dial plan, dial-now
 - Voicemail, MWI
 - Intercom, Paging
 - Call park, call pickup
 - Distinctive ringtone
 - Wideband codec: G.722
 - Narrowband codec: G.711, G.723.1, G.726, G.729AB, VAD, CNG, AEC, PLC, AJB, AGC
 - Full-duplex hands-free speakerphone with AEC
 - SIP v1 (RFC2543), v2 (RFC3261)
 - NAT Traversal: STUN mode
 - DTMF: In-Band, RFC2833, SIP Info
 - Configuration: browser/phone/auto-provision
 - Direct IP call without SIP proxy
 - Dial number via SIP server
 - Dial URL via SIP server
 - Admin/user configuration mode
 - TI TITAN chipset
 - 5-line LCD
 - 31 keys
 - 4 LEDs: 1xpower, 2xline, 1xmessage
 - 1xRJ9 handset port
 - 1xRJ9 headset port
 





