The entry-level business phone that brings 

more possibilities 

Nexvoo N303 is an 7 SIP lines entry-level SIP Phone with 6-way conference and 12 SIP accounts.  All the necessary VoIP features provide the high quality and convenient experience for users.

Superior HD Audio

Nexvoo N303 SIP phone provides distraction-free communications with advanced smart noise filtering technology, guaranteeing excellent sound quality without unpleasant noises and fluent conversations.

Compatible with Major Platforms

N303 is compatible with major platforms in the industry, such as Asterisk, Broadsoft, 3CX, Metaswitch, Yeastar etc.

Convenient Communication

Nexvoo N303 is equipped with 7 SIP lines, 12 SIP accounts and 6-way conference. This allows convenient communication and experience for all the users.

Additional Features

Opus voice

This SIP phone can handle a variety of audio applications, including IP voice, multiparty conference, etc.

adjustable angles and Wall mount

N303 IP phone can be put with 2 adjustable angles of 30 and 45 degrees. The phone can also be wall mounted.

Multiple ports

It is equipped with dual Gigabit ports, with integrated PoE.


Audio Features

• HD handset, HD speaker

• Hearing aid compatible (HAC) handset

• Wideband ADC/DAC 16KHz sampling

• Narrowband Codec: G.711a/u, G.726-32K,

 G.729AB, iLBC

• Wideband Codec: G.722, Opus

• Full-duplex hands-free speakerphone with AEC


• Packet Loss Concealment

• Dynamic adaptive jitter buffer

• DTMF: In-band , Out-of-Band(RFC2833), SIP INFO

Phone Features

• 12 SIP accounts

• User-defined DSS keys/soft keys, support up to

 15 DSS/BLF keys

• Call hold, call waiting

• Call forwarding (Always / Busy / No answer)

• Call transfer (Blind / Attended / Semi-Attended)

• One-touch speed dial, hotline, mute, DND

• Group listening, emergency call

• Redial, call return, auto answer

• Direct IP call without SIP proxy

• Set date time manually or automatically

• Support EHS wireless headset (via external accessories)

• Dial plan, action URL/URI

• uaCSTA

• 6-Way conferencing

Network and Security

• 10/100/1000M Ethernet

• IPv4/IPv6

• IP assignment: static/DHCP/PPPoE

• SIP v1 (RFC2543), v2 (RFC3261)

• Call server redundancy supported

• NAT traversal: STUN mode

• Proxy mode and peer-to-peer SIP

 link mode


• Support 802.1x network access authority


• Virtual Private Network (VPN): L2TP/


• Support HTTP/HTTPS service

• Virtual Local Area Network (VLAN)

• Link Layer Discovery Protocol (LLDP)

• Quality of Service (QoS)

• Time and date synchronization

 using SNTP

• RTCP-XR (RFC3611),


• SRTP, Transport Layer Security (TLS1.2) 

User Interface

• 2.7”192x64 pixel grayscale backlit LCD

• Multiple languages(English/Simplified



• LED for call and message waiting


• Caller ID with name, number

IP-PBX Features

• Busy Lamp Field (BLF)

• Anonymous call, anonymous call


• Hot desking, intercom, paging

• Message Waiting Indicator (MWI)

• Voice Message

• Call park, call pickup, music on hold

• Call completion, call recording


• Local phonebook up to 1000 entries

• XML/LDAP remote phonebook

• Black list / White list

• Smart dialing

• Phonebook search/import/export

• Call history: dialed/received/missed/



• Dual-port 1G Ethernet

• Power over Ethernet (IEEE 802.3af),

 class 3

• 1 x Security lock port

• 1 x RJ9 (4P4C) handset port

• 1 x RJ9 (4P4C) headset port

• 1 x Power adapter

• 1 x USB 2.0, Standard A, U disk or USB headset

Other Physical Features

• AC/DC Adapter (optional)

 - AC Input: 100~240V, 50~60Hz

 - DC Output: 5V, 2A

• Power consumption (PoE): 1.55W~10.4W

• Power consumption (PSU): 1.5W~3.5W

• Operating temperature: 0~45℃

• Operating humidity: 10~95%

• Color: Classic Gray

• Stand with 2 adjustable angles

• Dimension: 8.65 x 6.7 x 1.34 inches

• Wall mountable (optional)

Feature keys

• 5 DSS Keys with Dual-color

 (red/green) LEDs

• 1 page turning key

• 4 dynamic Soft-Key

• 3 function keys (call transfer/voice


• 4 arrow keys, 1 OK key

• 12 standard telephone number keys

• Volume control keys

• Illuminated mute/headset/hands-free

 speakerphone key


• Configuration: browser/phone/


• Auto provision via FTP/TFTP/HTTP

 /HTTPS for mass deployment

• Auto-provision with PnP,

 Zero-sp-touch, TR-069

• Web message capture

 (Web-based Packet-dump)

• Configuration export/import

• Reset to factory, Package tracing

 export, system log

Package Features

• Package content:

 - NexFone N303 IP Phone

 - Handset

 - Handset cord

 - Ethernet Cable

 - Stand

 - Quick Start Guide

 - Wall mountable (Optional)

 - Power Adapter (Optional)

Get in Touch with Nexvoo

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