Yealink SIP-T48G Administrator's Manual page 26

Administrator's Guide for SIP-T2_Series_T4_Series 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, LDAP , 802.1X authentication.
Codecs and Voice Features

Wideband codec: G.722
-
Narrowband codec: G.711, G.726, G.729, iLBC, G723 (not applicable to
-
SIP-T27P , SIP-T23P/G and SIP-T21(P) E2 IP phones)
- 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 (not applicable to SIP-T42G/T41P IP phones)
-
VLAN assignment: LLDP/Static/DHCP/CDP
-
Bridge mode for PC port
-
- 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
-
Dial URL via SIP server
-
- TR-069
Security

HTTPS (server/client)
-
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