Networking
| Wi-Fi |
N |
| Ethernet LAN data rates |
1000, 100, 10 Mbit/s |
| Quality of Service (QoS) support |
Y |
| Supported network protocols |
SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, HTTPS |
| Ethernet LAN interface type |
Gigabit Ethernet |
| Bluetooth |
N |
Technical details
| Answering machine |
Y |
| Keypad number of keys |
42 |
| Dual-Tone Multi-Frequency (DTMF) modes |
SIP info, Out-of band, In-band |
| Integrated voicemail |
Y |
| Phonebook sharing |
Y |
| Keypad illumination |
Y |
| Handset type |
Wired handset |
Phone features
| Do not disturb function |
Y |
| Message-waiting indicator (MWI) |
Y |
| Call return |
Y |
| Call pick up |
Y |
| Full duplex |
Y |
| Call hold |
Y |
| Number of VoIP accounts |
16 |
| Anonymous call rejection |
Y |
| Intercom |
Y |
| Call transfer |
Y |
| Conference call |
Y |
| Speed dialing |
Y |
| Call waiting |
Y |
| Caller ID |
Y |
| Call park |
Y |
| Redialing |
Y |
| Anonymous call |
Y |
| Lines quantity |
16 lines |
| Phonebook capacity |
1000 entries |
Power
| AC adapter output current |
2 A |
| AC adapter output voltage |
5 V |
| AC adapter input voltage |
100 - 240 V |
| Power over Ethernet (PoE) |
Y |
Packaging content
| Number of handles included |
1 pc(s) |
Additionally
| Call forwarding capability |
Y |
| Ethernet LAN (RJ-45) ports quantity |
2 |
| Ethernet LAN connection |
Y |
17.78 cm (7 ") LCD, 800 x 480, T4S, USB 2.0, 16 SIP, 16 VoIP, PoE, 2x RJ-45, 2x RJ-9, RJ-12
The SIP-T48S IP Phone is a dynamic business communications solution for executives and professionals. This phone offers a large touch screen that makes switching between pages and applications swift, easy and convenient. The SIP-T48S is also with Yealink’s Optima HD Voice technology and wideband codec of Opus for unparalleled audio clarity. Phone users will think they are sitting in the same room with one another. The phone uses Gigabit Ethernet technology for rapid call handling. Plus, it works in conjunction with Bluetooth USB Dongle and Wi-Fi USB Dongle. The new T4S series offers the same elegant appearance of the T4 line, but with improvements for greater interoperability and collaboration.
