VoIP phone - SIP, SIP v2 - 2 lines
| Main Specifications | |
|---|---|
| Product Description | Yealink SIP-T21P E2 - VoIP phone |
| Product Type | VoIP phone |
| Main Features | Integrated Ethernet switch |
| VoIP Protocols | SIP, SIP v2 |
| Voice Codecs | G.722, G.723.1, G.729ab, G.711u, G.711a, G.726, iLBC |
| Lines Supported | 2 lines |
| Speakerphone | Yes |
| Call Services | Voice Mail, Caller ID, Call Waiting, Call Forwarding, Call Transfer, Call Hold, Message Waiting Capability |
| Display | LCD display - monochrome - Yes |
| Network Ports Qty | 2 x Ethernet 10Base-T/100Base-TX |
| General | |
| Product Type | VoIP phone |
| Miscellaneous | |
| Connections | Headset jack / RJ-9 |
| Placing / Mounting | Wall-mountable, table-top |
| Display | |
| Type | LCD display - monochrome |
| Display Location | Base |
| Display Resolution | 132 x 64 pixels |
| Backlit | Yes |
| Phone Features | |
| Call Services | Voice Mail, Caller ID, Call Waiting, Call Forwarding, Call Transfer, Call Hold, Message Waiting Capability |
| Dialer Location | Base |
| Speakerphone | Yes |
| Messaging Services | SMS |
| Indicators | Visual ringer light, voice message waiting indicator, line status indicator |
| Additional Functions | Web browser, Intercom |
| Dimensions & Weight (Base) | |
| Width | 8.2 in |
| Depth | 7.4 in |
| Height | 5.9 in |
| Phone Memory | |
| Phone Directory Capacity | 1000 names & numbers |
| IP Telephony | |
| Main Features | Integrated Ethernet switch |
| VoIP | Yes |
| VoIP Protocols | SIP, SIP v2 |
| Voice Codecs | G.722, G.723.1, G.729ab, G.711u, G.711a, G.726, iLBC |
| Lines Supported | 2 lines |
| Quality of Service | IEEE 802.1Q (VLAN), Differentiated Services (DiffServ), IEEE 802.1p, Type of Service (ToS) |
| IP Address Assignment | DHCP, static |
| Security | EAP-MD5, IEEE 802.1X, TLS |
| Power Over Ethernet (PoE) Support | Yes |
| Network Protocols | IP, TCP, TFTP, UDP, HTTP, DNS, HTTPS, SRTP, RTCP, SNTP |
| Network Ports Qty | 2 x Ethernet 10Base-T/100Base-TX |
| Voice Features | Comfort noise generation (CNG), voice activity detection (VAD), HD Voice, acoustic echo cancellation (AEC), packet loss concealment (PLC), adaptive jitter buffer (AJB), automatic gain control (AGC) |
| Network Features | Network Address Translation (NAT), Class 2 PoE, Lightweight Directory Access Protocol (LDAP) |