The SIP-T42S IP phone is a dynamic business communications tool for superior voice communications and extended functionality. It has a faster, more responsive interface than the T42G and offers better overall performance. The SIP-T42S is a 12-line IP phone with multiple programmable keys for enhancing productivity. It is with Yealink Optima HD Voice Technology and wideband codec of Opus for superb sound quality and crystal clear communications. What’s more, the SIP-T42S is built with Gigabit Ethernet technology for rapid call handling. Plus, with an all-new USB port, the SIP-T42S boasts unparalleled functionality and expansibility, which comes ready for future Bluetooth, Wi-Fi and USB recording features. The new T4S series offers the same elegant appearance of the T4 line, but with improvements for greater interoperability and collaboration.
Products specifications
| Attribute name | Attribute value |
|---|
| Lines quantity | 12 lines |
| Width | 8.35" |
| Depth | 7.44" |
| Height | 6.89" |
| Mounting | Desk/Wall |
| Speakerphone | Y |
| Volume Control | Digital |
| Display | LCD |
| Touchscreen | N |
| AC adapter output voltage | 5 V |
| Bluetooth | N |
| Caller ID | Y |
| Conference call | Y |
| Front camera | N |
| Backlight display | Y |
| Speed dialing | Y |
| Energy saving mode | Y |
| Call hold | Y |
| Handset type | Wired handset |
| Voice codecs | CNG, G.711Mu, G.711a, G.723.1, G.726, G.729ab, VAD, iLBC |
| Number of programmable keys | 6 |
| Phonebook capacity | 1000 entries |
| Redialing | Y |
| Dual-Tone Multi-Frequency (DTMF) modes | In-band, Out-of band, SIP info |
| Number of VoIP accounts | 12 |
| Call forwarding | Y |
| Do not disturb function | Y |
| Call park | Y |
| Call pick up | Y |
| Anonymous call | Y |
| Anonymous call rejection | Y |
| Phonebook sharing | Y |
| Call return | Y |
| Call transfer | Y |
| SIP registrar server | Y |
| Integrated voicemail | Y |
| RJ-9 ports quantity | 2 |
| Number of handles included | 1 pc(s) |
| Product color | Black |
| Package width | 9.69" |
| Package depth | 8.78" |
| Package height | 4.72" |
| Ethernet LAN (RJ-45) ports | 2 |
| USB 2.0 ports quantity | 1 |
| Operating temperature (T-T) | -10 - 50 °C |
| Operating relative humidity (H-H) | 10 - 95 % |
| AC adapter output current | 1.2 A |
| AC adapter input voltage | 100 - 240 V |
| Full duplex | Y |
| Wall mountable | Y |
| Product type | IP Phone |
| Manual | Y |
| Cables included | LAN (RJ-45) |
| Networking standards | IEEE 802.3af |
| Ethernet LAN | Y |
| Display resolution | 192 x 64 pixels |
| Ethernet LAN data rates | 10,100 Mbit/s |
| Wi-Fi | N |
| Ethernet LAN interface type | Fast Ethernet |
| Quality of Service (QoS) support | Y |
| Power over Ethernet (PoE) | Y |
| Supported network protocols | SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, FTP/TFTP/HTTP/HTTPS |
| Display diagonal | 2.7" |
| Answering machine | Y |
| Call waiting | Y |