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What it is
The Yealink SIP-T31G is a desk or wall-mountable IP phone with a 2.3-inch 132x64 LCD, two Gigabit Ethernet ports, two RJ9 ports, and supports two VoIP accounts and SIP registrations. It is powered over Ethernet (PoE).
Who it's for
Designed for users needing a straightforward, wired IP phone with basic features like dual lines and an answering machine in offices or small businesses.
Why it's good
This phone supports essential VoIP functions with reliable wired connectivity, offering easy deployment via PoE. Its compact display gives clear call info without being overly complex.
When to choose it
Use this where a cost-effective, no-frills IP handset is needed, especially if PoE and dual-line support are requirements.
Specifications
| Features | |
|---|---|
| SIP registrar server | Yes |
| Handset type | Wired handset |
| Mounting | Desk/Wall |
| Wall mountable | No |
| Plug and Play | Yes |
| Handset | Yes |
| Ethernet cable | Yes |
| Product colour | Grey |
| Technical details | |
| SIP registrar server | Yes |
| Answering machine | Yes |
| Handset type | Wired handset |
| Mounting | Desk/Wall |
| Speakerphone | Yes |
| Quick start guide | Yes |
| Plug and Play | Yes |
| Handset | Yes |
| Ethernet cable | Yes |
| Sustainability compliance | Yes |
| Harmonized System (HS) code | 85171800 |
| Compliance certificates | RoHS, REACH |
| Design | |
| Product type | IP Phone |
| Handset type | Wired handset |
| Mounting | Desk/Wall |
| Wall mountable | No |
| Product colour | Grey |
| Phone features | |
| Call transfer | Yes |
| Call return | Yes |
| SIP registrar server | Yes |
| Number of VoIP accounts | 2 |
| Answering machine | Yes |
| Lines quantity | 2 lines |
| Speed dialling | Yes |
| Redialing | Yes |
| Phonebook capacity | 1000 entries |
| Full duplex | Yes |
| Conference call | Yes |
| Caller ID | Yes |
| Call waiting | Yes |
| Call hold | Yes |
| Call forwarding | Yes |
| Anonymous call rejection | Yes |
| Anonymous call | Yes |
| Call history | Yes |
| Management features | |
| Plug and Play | Yes |
| Display | |
| Touchscreen | No |
| Display resolution | 132 x 64 pixels |
| Display diagonal | 5.84 cm (2.3") |
| Display | LCD |
| Backlight display | Yes |
| Audio | |
| Comfort noise generation (CNG) | Yes |
| Voice codecs | G.722, G.729, AGC, G.729A, AJB, PLC, G.711Mu, VAD, G.711a, G.723.1, G.726, iLBC, CNG, OPUS |
| Speakerphone | Yes |
| Microphone mute | Yes |
| Packet loss concealment (PLC) | Yes |
| Network | |
| Networking standards | IEEE 802.3af, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1x |
| Ethernet LAN interface type | Gigabit Ethernet |
| Ethernet LAN data rates | 10,100,1000 Mbit/s |
| Wi-Fi | No |
| Quality of Service (QoS) support | Yes |
| Ethernet LAN | Yes |
| DHCP client | Yes |
| Bluetooth | No |
| Colour | |
| Product colour | Grey |
| Microphone | |
| Microphone mute | Yes |
| Ergonomics | |
| Wall mountable | No |
| Ports & interfaces | |
| RJ-9 ports quantity | 2 |
| Ethernet LAN (RJ-45) ports | 2 |
| DC-in jack | Yes |
| Certificates | |
| Sustainability compliance | Yes |
| Compliance certificates | RoHS, REACH |
| Power | |
| AC adapter output current | 0.6 A |
| Power over Ethernet (PoE) | Yes |
| Power consumption (typical) | 3 W |
| AC adapter output voltage | 5 V |
| AC adapter input voltage | 100 - 240 V |
| Operational conditions | |
| Operating temperature (T-T) | -10 - 50 °C |
| Operating relative humidity (H-H) | 10 - 95% |
| Weight & dimensions | |
| Width | 188 mm |
| Depth | 189 mm |
| Height | 162 mm |
| Package width | 213 mm |
| Package depth | 210 mm |
| Package height | 103 mm |
| Packaging content | |
| Number of handles included | 1 pc(s) |
| Quick start guide | Yes |
| Handset | Yes |
| Ethernet cable | Yes |
| Mounting kit | Yes |
| Logistics data | |
| Harmonized System (HS) code | 85171800 |
Check with Creative Systems to ensure this phone fits your setup and current stock status.
