SIP phone · X300 Series
X303 SIP desk phone — four lines on dual megabit ports
The base model of the X303 group: a 2.4-inch (320×240) colour screen, 4 SIP lines, HD audio on G.722 and Opus and dual megabit ports.
- 2.4-inch (320×240) colour screen
- 4 SIP lines
- HD audio with G.722 and Opus
- 6-way audio conference — the organiser can invite up to 5 participants
- Dual-core chip; IPv4 and IPv6
- Desktop or wall-mounted

Four lines and a six-way conference
The X303 handles 4 SIP lines on a 2.4-inch (320×240) colour screen, and its 6-way audio conference is built around a single organiser who invites up to five participants.
- 6-way audio conference; the organiser can invite up to 5 participants
- HD audio with G.722 and Opus
- Dual-core chip
Network, PoE and variants
The base X303 carries dual megabit ports and supports IPv4 and IPv6. PoE is not stated for the base model — in this series it is documented on the P, G and W variants.
X303 variants — networking and PoE
| Variant | Ethernet | PoE | Wi-Fi |
|---|---|---|---|
| X303 | Dual megabit ports | Not stated | Not stated |
| X303G | Dual Gigabit ports | Integrated PoE | Not stated |
| X303W | Dual megabit ports | Integrated PoE | Built-in 2.4G & 5G |
The materials also list an X303P variant with integrated PoE, and a two-wire X303 version. Bluetooth, an operating system, dimensions, weight, colour and IP rating are not stated for the series.
Where it fits on site
Small team desk
Four lines and a six-way conference cover a desk that organises calls rather than just taking them.
Reception that gathers people into a call
Four lines and a 6-way conference suit a desk that brings others into the conversation.
Volume office deployment
A colour screen and gigabit-free simplicity where the cabling is already megabit.
Specifications
Display & calling
| Screen | 2.4-inch (320×240) colour screen |
|---|---|
| SIP lines | 4 |
| Conference | 6-way; the organiser can invite up to 5 participants |
| Codecs | G.722 and Opus |
| Chip | Dual-core |
Network & power
| Ethernet | Dual megabit ports |
|---|---|
| PoE | Not stated for the X303; integrated PoE on the P, G and W variants |
| Wi-Fi | Not stated for the X303; built-in 2.4G & 5G on the X303W |
| Protocols | IPv4, IPv6 |
Deployment
| Headset | EHS wireless headset support |
|---|---|
| Mounting | Desktop / wall-mounted |
| Dimensions, weight, colour, IP rating | Not stated in the source materials |
iSpecifications are taken from the product literature supplied with the range. Variant availability and the final feature set are confirmed on the quotation.
Choosing between options
| Model | Specifications |
|---|---|
| V50G | 2.3-inch mono screen · Backlit display · Dual Gigabit + PoE · Wall-mount only |
| V50P | 2.3-inch mono screen · PoE support · 6-way conference · Wall-mount only |
| V60G | 2.4-inch colour screen · 6 DSS keys · Dual Gigabit + PoE · Wall-mount only |
| V60W | 2.4-inch colour screen · 6 DSS keys · Wi-Fi 6 + BT 5.4 · Wall-mount only |
| V61G | 2.4-inch colour LCD · 4 SIP lines · 12 DSS keys · Dual Gigabit + PoE |
| V61W | 2.4-inch colour LCD · 4 SIP lines · Wi-Fi 6 + BT 5.4 · Dual Gigabit + PoE |
| V62 | V Series desk phone · Spec list on request · Confirm on quotation · SIP extension |
| V62G | 2.8-inch colour screen · 12 SIP lines · 21 DSS keys · Dual Gigabit + PoE |
| V62W | 2.8-inch colour screen · 12 SIP lines · Wi-Fi 6 + BT 5.4 · Dual Gigabit + PoE |
| V63 | 2.8-inch colour screen · 6 SIP lines · 21 DSS keys · Dual Gigabit + PoE |
| V64 | 3.5-inch colour LCD · 12 SIP lines · 21 DSS keys · Dual Gigabit + PoE |
| V65 | 4.3-inch screen · 20 SIP lines · 45 DSS keys · Wi-Fi + Bluetooth 4.2 |
| V66 | 7-inch touch screen · 20 SIP lines · 116 DSS keys · Wi-Fi 6 + Bluetooth 5.4 |
| V67 | 7-inch touch screen · 20 SIP lines · 116 DSS keys · Built-in 5 MP camera |
| X2P | 2 SIP lines · 2.8-inch colour screen · RJ9 + 3.5 mm headset · Pedal switch ready |
| X3U | 6 SIP lines · 2.8-inch colour screen · 3-way conference · Gigabit + PoE |
| X4U | 12 SIP lines · 2.8-inch + 2.4-inch · 30 DSS keys · Gigabit + PoE |
| X5U | 16 SIP lines · 3.5-inch + 2.4-inch · 30 DSS keys · 4 LED line keys |
| X6U | 20 SIP lines · 4.3-inch + 2 side screens · 60 DSS keys · 5 LED line keys |
| X7A | 7-inch touch screen · Android 9.0 · 20 SIP lines · 112 DSS keys |
| X7C | 5-inch colour screen · 20 SIP lines · 60 DSS keys · SIP hotspot |
| X210 | 4.3-inch + 2 × 3.5-inch · 20 SIP lines · 106 DSS keys · SIP hotspot |
| X210i | Paging console · 20 SIP lines · 106 DSS keys · Gooseneck microphone |
| X301 | 2 SIP lines · 2.3-inch dot-matrix · Dual megabit ports · 6-way conference |
| X301G | 2 SIP lines · 2.3-inch dot-matrix · Dual Gigabit + PoE · 6-way conference |
| X301W | 2 SIP lines · Built-in 2.4G & 5G Wi-Fi · 2.3-inch dot-matrix · 6-way conference |
| X303 | 4 SIP lines · 2.4-inch colour screen · Dual megabit ports · 6-way conference |
| X303G | 4 SIP lines · 2.4-inch colour screen · Dual Gigabit + PoE · 6-way conference |
| X303W | 4 SIP lines · Built-in 2.4G & 5G Wi-Fi · PoE · 6-way conference |
Compatibility boundaries
This model uses standard SIP and the interfaces listed in the specification table. Confirm the PBX, SIP provider or platform against those interface notes before the order; where the documentation does not state a value, the table records it as not stated rather than estimating. PoE, analog port variants, power options and card compatibility are fixed at order time.
Handover, spares and support
Extension plan, provisioning and interface language can be prepared before dispatch. Remote support continues after handover. Spare-part, warranty and service terms are confirmed in the quotation for the models and quantity ordered, so they are not printed as a single figure here.
Where it sits in the system
Frequently asked questions
Does the X303 have PoE?
How does the conference work?
How many lines does it support?
Which variant has Wi-Fi?
Standards referenced
Explore Products
Related products

X303G
Four-line X300 phone with Gigabit ports, PoE and a colour screen.
- 4 SIP lines
- 2.4-inch colour screen
- Dual Gigabit + PoE

X303W
Four-line desk phone with dual-band Wi-Fi built in and PoE.
- 4 SIP lines
- Built-in 2.4G & 5G Wi-Fi
- PoE

X301
Entry X300 Series desk phone with two lines and a dot-matrix display.
- 2 SIP lines
- 2.3-inch dot-matrix
- Dual megabit ports
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Page author: NEXVIA EngineeringPublished: Last updated: