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