Snom snom300
SNOM Technology 300 IP Phone User Manual
Model: snom300
Product Overview
The Snom 300 is a professional SIP-based IP phone designed for business communication. It offers a comprehensive set of features for everyday office use, including multiple SIP identities, a headset connection, and Power over Ethernet (PoE) support. Its intuitive interface and robust functionality make it suitable for various VoIP environments.

Figure 1: The Snom 300 IP Phone, showcasing its compact design and key layout. The phone is black with a display screen, numeric keypad, and function buttons.
Setup and Installation
Follow these steps to set up your Snom 300 IP Phone:
- Connect the Handset: Plug the coiled handset cord into the port labeled with a handset icon on the side of the phone base.
- Connect to Network/Power:
- Using Power over Ethernet (PoE): Connect an Ethernet cable from your PoE-enabled network switch or router to the LAN port on the back of the phone. The phone will power on automatically.
- Using a Power Adapter (Sold Separately): If PoE is not available, connect a compatible power adapter (not included) to the power input port on the back of the phone, then connect an Ethernet cable from your network to the LAN port.
- Initial Boot-up: The phone will power on and attempt to obtain an IP address via DHCP. The display will show the boot-up progress.
- Web Interface Access: Once the phone has an IP address, you can access its web-based configuration interface by entering the phone's IP address into a web browser on a computer connected to the same network. The IP address is typically displayed on the phone's screen or can be found in the phone's network settings menu.
- SIP Account Configuration: Log in to the web interface (default credentials are often admin/password or similar, refer to Snom documentation for specifics). Navigate to the SIP Identity settings to configure your VoIP provider's account details (SIP server, username, password, etc.). The Snom 300 supports up to 4 SIP identities.
Operating Instructions
This section covers basic operation of your Snom 300 IP Phone.
Making and Receiving Calls
- To Make a Call: Lift the handset, dial the number, and press the Dial button or wait for automatic dialing. Alternatively, press the Speakerphone button, dial, and press Dial.
- To Answer a Call: Lift the handset or press the Speakerphone button when the phone rings.
- To End a Call: Replace the handset or press the End Call button.
Call Features
- Hold: During a call, press the Hold button. Press it again to resume the call.
- Transfer: During a call, press the Transfer button. Dial the number to transfer to, then press Transfer again for a blind transfer, or wait for the party to answer and then press Transfer for an attended transfer.
- Conference: During a call, press the Conference button. Dial the second party's number. Once connected, press Conference again to join all parties. The Snom 300 supports a 3-way conference bridge on the phone.
- Do Not Disturb (DND): Press the DND button to activate/deactivate. When active, incoming calls will be redirected or sent to voicemail.
- Speakerphone: Press the Speakerphone button to toggle between handset and speakerphone mode.
- Headset: Connect a compatible headset to the dedicated headset port. Press the Headset button to switch audio to the headset.
Programmable Function Keys
The Snom 300 features 6 programmable function keys with LEDs. These can be configured via the web interface for various functions such as speed dial, busy lamp field (BLF), line appearance, or custom features provided by your VoIP system.
Address Book and Call Lists
- Address Book: Access the internal address book (up to 100 entries) to store frequently called numbers.
- Call Lists: View lists of missed, received, and dialed calls (up to 100 entries each) using the navigation keys and display.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the phone's surface. For stubborn marks, a slightly damp cloth with mild soap can be used, ensuring no liquid enters the phone. Avoid abrasive cleaners or solvents.
- Firmware Updates: Periodically check the Snom website or consult your VoIP service provider for available firmware updates. Firmware updates can improve performance, add features, and address security vulnerabilities. Updates are typically performed via the phone's web interface.
- Environmental Conditions: Operate the phone within recommended temperature and humidity ranges. Avoid exposing the phone to direct sunlight, excessive heat, or moisture.
Troubleshooting
This section provides solutions to common issues you might encounter.
| Problem | Possible Cause | Solution |
|---|---|---|
| No dial tone / Phone not registering | Network connectivity issue, incorrect SIP settings, no power. | Check Ethernet cable connection. Verify power supply (PoE or adapter). Confirm SIP account details (username, password, server address) in the web interface. Restart the phone and network equipment. |
| Poor audio quality (echo, static) | Network congestion, faulty cable, microphone/speaker issue. | Ensure sufficient network bandwidth. Try a different Ethernet cable. Adjust speakerphone volume. If using a headset, check its connection and functionality. |
| Display is blank or frozen | Power issue, software error. | Check power connection. Perform a power cycle (unplug and re-plug the power/Ethernet cable). If the issue persists, a factory reset might be necessary (consult Snom support documentation for procedure). |
| Cannot access web interface | Incorrect IP address, network firewall, phone not booted. | Verify the phone's IP address on its display. Ensure your computer is on the same network segment. Temporarily disable any local firewalls. Wait for the phone to fully boot up. |
If you continue to experience issues, please refer to the Snom support website or contact your VoIP service provider for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Brand | Snom |
| Model Number | snom300 |
| Product Dimensions | 7.87 x 4.72 x 7.28 inches |
| Item Weight | 1.61 pounds |
| Display | 2 x 16 character display, backlit |
| Keys | 27 keys, 6 programmable function keys with LEDs |
| SIP Identities | 4 |
| Ethernet Ports | 2 x IEEE 802.3 10/100 Mbps switch |
| Power Source | Corded Electric (PoE supported) |
| Codecs Supported | G.711, G.729A, G.723.1, G.722, G.726, GSM 6.10 |
| Security | SIPS/SRTP, TLS |
| Headset Connection | Yes |
| Speakerphone | Full duplex |
| Address Book Capacity | 100 entries |
| Call Lists Capacity | 100 entries each (missed, received, dialed) |
| Manufacturer | SNOM Technology |
| First Available Date | July 19, 2007 |
Warranty and Support
The Snom 300 IP Phone typically comes with a manufacturer's warranty. Please refer to the warranty card included with your product or visit the official Snom website for detailed warranty terms and conditions.
For technical support, troubleshooting beyond this manual, or inquiries regarding firmware updates and advanced configurations, please contact your VoIP service provider or visit the official Snom support portal:
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