Mô tả
Điện thoại IP Yealink SIP-T48G
| Phone Features | 6 VoIP accounts |
| Call hold, mute, DND | |
| One-touch speed dial, hotline | |
| Call forward, call waiting, call transfer | |
| Group listening, emergency call | |
| Redial, call return, auto answer | |
| 3-way conferencing | |
| Direct IP call without SIP proxy | |
| Ring tone selection/import/delete | |
| Set date time manually or automatically | |
| Dial plan, XML Browser, action URL/URI | |
| Display and Indicator | 7 inch 800 x 480-pixel color touch screen with backlight |
| 24 bit depth color | |
| LED for call and message waiting indication | |
| Wallpaper | |
| Intuitive user interface with icons and soft keys | |
| National language selection | |
| Caller ID with name, number and photo | |
| Audio Features | HD voice: HD handset, HD speaker |
| Codecs: G.722, G.711(A/µ), G.723.1, G.729AB, G.726, iLBC | |
| DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO | |
| Full-duplex hands-free speakerphone with AEC | |
| Feature keys | 29 one-touch DSS keys |
| 7 features keys: message, headset, hold, mute, transfer, redial, hands-free speakerphone | |
| 6 navigation keys | |
| Volume control keys | |
| Illuminated mute key | |
| Illuminated headset key | |
| Illuminated hands-free speakerphone key | |
| IP-PBX Features | |
| Busy Lamp Field (BLF) | |
| Bridged Line Apperance(BLA) | |
| Anonymous call, anonymous call rejection | |
| Remote office, hot-desking | |
| Message Waiting Indicator (MWI) | |
| Voice mail,call park, call pickup | |
| Intercom, paging, music on hold | |
| Call completion, call recording | |
| Management | Configuration: browser/phone/auto-provision |
| Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy | |
| Auto-provision with PnP | |
| Zero-sp-touch, TR-069 | |
| Phone lock for personal privacy protection | |
| Reset to factory, reboot | |
| Package tracing export, system log | |
| Network and Security | SIP v1 (RFC2543), v2 (RFC3261) |
| Call server redundancy supported | |
| NAT transverse: STUN mode | |
| Proxy mode and peer-to-peer SIP link mode | |
| IP assignment: static/DHCP/PPPoE | |
| HTTP/HTTPS web server | |
| Time and date synchronization using SNTP | |
| UDP/TCP/DNS-SRV(RFC 3263) | |
| QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP | |
| SRTP for voice | |
| Transport Layer Security (TLS) | |
| HTTPS certificate manager | |
| AES encryption for configuration file | |
| Digest authentication using MD5/MD5-sess | |
| OpenVPN, IEEE802.1X |
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