Yealink SIP-T2xP Administrator's Manual page 26

Administrator's Guide for SIP-T2xP and SIP-T19P IP Phones
In addition to physical features introduced above, IP phones also support the following
key features when running the latest firmware:
Phone Features

Call Options: emergency call, call waiting, call hold, call mute, call forward,
-
call transfer, call pickup, conference.
- Basic Features: DND, phone lock, auto redial, live dialpad, dial plan, hotline,
caller identity, auto answer.
Advanced Features: BLF , server redundancy, distinctive ring tones, remote
-
phone book (not applicable to SIP-T20P IP phones), LDAP (not applicable to
SIP-T19P and SIP-T20P IP phones), 802.1X authentication.
Codecs and Voice Features

Wideband codec: G.722
-
- Narrowband codec: G.711, G.723, G.726, G.729AB, iLBC
VAD, CNG, AEC, PLC, AJB, AGC
-
Full-duplex speakerphone with AEC
-
Network Features

SIP v1 (RFC2543), v2 (RFC3261)
-
- NAT Traversal: STUN mode
- DTMF: INBAND, RFC2833, SIP INFO
Proxy mode and peer-to-peer SIP link mode
-
- IP assignment: Static/DHCP/PPPoE
- VLAN assignment: LLDP/Static/DHCP
Bridge/Router mode for PC port (Router mode is not applicable to SIP-T19P and
-
SIP-T21P IP phones)
TFTP/DHCP/PPPoE client
-
- HTTP/HTTPS server
DNS client
-
NAT/DHCP server
-
- IPv6 support
Management

- FTP/TFTP/HTTP/PnP auto-provision
Configuration: browser/phone/auto-provision
-
Direct IP call without SIP proxy
-
- Dial number via SIP server
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