1. Introduction
The Snom D735 is a state-of-the-art SIP phone designed for professional communication environments. Featuring a high-resolution 2.7-inch color display and an innovative motion sensor, it provides an intuitive user experience by automatically displaying relevant information as your hand approaches. This phone delivers exceptional HD audio quality thanks to integrated Digital Signal Processors (DSP) that optimize sound and filter background noise. Equipped with a gigabit switch, Power over Ethernet (PoE) functionality, and a USB port for accessories like headsets, the Snom D735 is a versatile and efficient communication tool.
Figure 1.1: Front-left view of the Snom D735 SIP Phone, showcasing its sleek design and color display.
2. Setup
2.1 Unpacking the Device
Carefully remove all components from the packaging. Ensure the following items are present:
- Snom D735 SIP Phone unit
- Handset and handset cord
- Ethernet cable
- Quick Installation Guide (if included)
- Optional: Power adapter (if PoE is not used)
2.2 Physical Connections
- Connect the Handset: Plug one end of the coiled handset cord into the handset and the other end into the handset port on the phone base.
- Connect to Network/Power:
- Using Power over Ethernet (PoE): Connect one end of the Ethernet cable to the 'LAN' port on the phone and the other end to a PoE-enabled network switch or injector. The phone will power on automatically.
- Using a Power Adapter (Optional): If PoE is not available, connect the power adapter (sold separately) to the power port on the phone and plug it into a standard electrical outlet. Then, connect the Ethernet cable from your network to the 'LAN' port.
- Connect Optional Accessories: If using a USB headset or other USB accessories, plug them into the USB port on the side or back of the phone.
Figure 2.1: Front-right view of the Snom D735 SIP Phone, illustrating the various connection ports.
2.3 Initial Boot-up and Network Configuration
Upon successful connection, the phone will power on and begin its boot sequence. The display will show the Snom logo and then proceed to load the firmware. By default, the phone is configured to obtain an IP address automatically via DHCP. If your network requires a static IP address, you will need to configure this through the phone's web interface or on-screen menu after initial boot-up. Refer to your network administrator for specific IP settings.
2.4 SIP Account Registration
To make and receive calls, the Snom D735 must be registered with a SIP server. This typically involves entering your SIP account details (e.g., SIP User ID, Password, SIP Server Address) into the phone's configuration. This can be done via the phone's menu or, more commonly, through its web-based administration interface. Consult your VoIP service provider or IT administrator for the necessary account credentials and configuration steps.
3. Operating the Phone
3.1 Basic Call Functions
- Making a Call: Lift the handset or press the speakerphone button. Dial the desired number and press the Dial or OK button.
- Answering a Call: When the phone rings, lift the handset or press the speakerphone button.
- Ending a Call: Replace the handset or press the speakerphone button again.
- Redial: Press the Redial button to call the last dialed number.
- Mute: During a call, press the Mute button to mute your microphone. Press again to unmute.
- Hold: During a call, press the Hold button to place the active call on hold. Press again to resume the call.
3.2 Advanced Call Functions
- Call Transfer:
- Attended Transfer: During an active call, press the Transfer button, dial the new number, wait for the party to answer, and then press Transfer again to complete.
- Unattended Transfer: During an active call, press the Transfer button, dial the new number, and press Transfer immediately without waiting for an answer.
- Call Forwarding: Access the call forwarding settings via the phone's menu or web interface. You can typically set up unconditional, busy, or no-answer forwarding.
- 3-Way Conference: During an active call, press the Conference button (or equivalent soft key), dial the third party's number, and once they answer, press Conference again to join all parties.
3.3 Display and Navigation
The Snom D735 features a vibrant 2.7-inch color display. The innovative motion sensor activates the display and shows relevant key assignments when your hand approaches, then reverts to normal mode when you move away. Use the navigation cluster (up, down, left, right, OK) to browse menus and select options. The eight multicoloured function keys surrounding the display can be customized and labeled for quick access to frequently used features or contacts.
3.4 Audio Features
Experience crystal-clear conversations with the Snom D735's HD audio quality. The integrated Digital Signal Processors (DSP) actively optimize sound quality in real-time, reducing background noise and enhancing voice clarity. You can switch between handset, speakerphone, or a connected USB headset for your calls.
3.5 USB Port Usage
The integrated USB port allows for swift connection of various accessories, most commonly USB headsets. This provides flexibility for users who prefer hands-free communication or require enhanced audio privacy.
4. Maintenance
4.1 Cleaning Instructions
To maintain the appearance and functionality of your Snom D735, follow these cleaning guidelines:
- Always disconnect the phone from power before cleaning.
- Use a soft, lint-free cloth slightly dampened with water or a mild, non-abrasive cleaner.
- Do not use harsh chemicals, abrasive cleaners, or aerosol sprays directly on the phone.
- Wipe the display gently to avoid scratches.
- Ensure no liquid enters the phone's openings.
4.2 Software Updates
Snom periodically releases firmware updates to improve performance, add features, and address security vulnerabilities. It is recommended to keep your phone's firmware up to date. Updates are typically managed by your IT administrator or VoIP service provider. Consult Snom's official website for the latest firmware versions and update procedures.
5. Troubleshooting
This section provides solutions to common issues you might encounter with your Snom D735.
| Problem | Possible Cause | Solution |
|---|---|---|
| Phone does not power on | No power supply; faulty cable | Check if Ethernet cable is properly connected to a PoE source or if the power adapter is securely plugged in. Try a different outlet or cable. |
| No dial tone / Cannot make calls | No network connection; SIP account not registered; incorrect configuration | Verify network cable connection. Check phone's display for registration status. Ensure SIP account details are correctly entered. Restart the phone. |
| Poor audio quality (echo, static) | Network issues; faulty handset/headset; environmental noise | Check network stability. Try a different handset or headset if available. Ensure microphone is not obstructed. Adjust volume settings. |
| Display not responding to motion | Sensor obstruction; feature disabled | Ensure the area around the sensor (above the display) is clear. Check phone settings to ensure the motion sensor feature is enabled. |
If the problem persists after attempting these solutions, please contact your IT support or Snom customer service for further assistance.
6. Specifications
Below are the key technical specifications for the Snom D735 SIP Phone:
- Model Number: D735
- Product Dimensions: 7.28 x 3.54 x 8.66 inches (L x W x H)
- Item Weight: 1.8 pounds
- Color Options: Black, White
- Telephone Type: Corded
- Power Source: Corded Electric (PoE or optional power adapter)
- Dialer Type: Single Keypad
- Answering System Type: Digital
- Display: 2.7-inch High-Resolution Color LCD
- Connectivity: Integrated Gigabit Ethernet Switch (2-port), Power over Ethernet (PoE) support, USB Port
- Audio Features: HD Audio Quality, Digital Signal Processors (DSP) for real-time sound optimization
- Compatible Devices: USB headsets and wireless headsets with Electronic Hook Switch (EHS) support
- Conference Call Capability: 3-way conferencing
- Special Features: Built-in Motion Sensor, 8 Multicoloured Function Keys
7. Warranty and Support
7.1 Warranty Information
Snom products are covered by a limited warranty. For detailed information regarding the warranty period, terms, and conditions applicable to your Snom D735, please refer to the warranty card included with your product or visit the official Snom website. Keep your proof of purchase for warranty claims.
7.2 Technical Support
For technical assistance, troubleshooting beyond this manual, or inquiries about your Snom D735, please contact your authorized Snom dealer or visit the Snom support portal. The official Snom website (www.snom.com) provides access to FAQs, knowledge bases, and contact information for customer support.
