Description
☎️ Professional IP Phone Gigaset DE900 IP PRO - 12 SIP Lines - HD Sound - WiFi/Bluetooth/DECT - Integrated Gigabit Switch - Complete with Power Supply 📞
✅ GOOD CONDITION - TESTED AND FUNCTIONAL
✅ CONDITION: GOOD CONDITION - TESTED AND FUNCTIONAL
Delivered with its power supply, ready to use
Delivered with its power supply, ready to use
📋 Product Description
The Gigaset DE900 IP PRO is a high-end professional IP phone designed for demanding business environments. With its HDSP (High Definition Sound Performance) technology, this phone offers exceptional audio quality for crystal-clear communications. Its intuitive user interface, awarded an iF Communication Award, allows easy access to all advanced professional features.
Compatible with 12 simultaneous SIP VoIP accounts, this professional phone includes a 2-port Gigabit Ethernet switch, wireless WiFi connectivity (802.11b/g/n), Bluetooth, and DECT, as well as a directory of 500 contacts with photos. Ideal for business IP telephony, call centers, customer service, and all professionals requiring a high-performance and reliable communication tool. Delivered complete with its power supply, this phone is ready to be configured on your VoIP telephony system.
⚠️ Important note: The photos are provided for illustration purposes only. Only the content described in this announcement is authoritative regarding the exact product reference and included accessories. In case of doubt, do not hesitate to contact us before your purchase.
⚙️ Technical Specifications
| 🏷️ Model | Gigaset DE900 IP PRO |
| 📦 Product type | Professional fixed SIP IP phone with touchscreen |
| 📞 VoIP Protocol | SIP (RFC3261, RFC2543) |
| 📊 VoIP Accounts | 12 configurable VoIP accounts (simultaneous connection to 4 IP lines) |
| 🎧 Audio codecs | G.711 u/a, G.722 (Wideband HD), G.729AB, iLBC |
| 🔊 Sound quality | HDSP™ (High Definition Sound Performance) - Wideband technology |
| 🖥️ Screen | High-resolution TFT color screen with sensitive touch area |
| 📇 Directory | Up to 500 vCards with CLIP image capability (caller photo) LDAP support for online company directory Online Internet directories |
| 📋 Call log | List of the last 100 missed calls with number and call time display |
| ⚙️ Programmable keys | 14 programmable memory keys with customizable labels Ability to add up to 3 extension modules (up to 42 additional keys) |
| 🔌 Network connectivity | Integrated Gigabit Ethernet switch 2 ports (10/100/1000 Mbps) 1 port for LAN network connection 1 PC port to connect a computer in cascade |
| 📡 Wireless connectivity | WiFi IEEE 802.11b/g/n (2.4 GHz) Bluetooth® Class 2 (IEEE 802.15.1) - profiles HFP, HSP DECT GAP, CAT-iq 2.0 with ECO Plus mode |
| Power supply | Block sector 100-240V AC, 50/60Hz (12V DC) Power over Ethernet (PoE) IEEE 802.3af class 3 |
| Security | SRTP encryption (RFC3711) for call encryption TLS (RFC2246) and SIPS for securing signaling Open VPN client for secure connections |
| 🎯 Phone functions | Conference call with up to 5 participants BLF (Busy Lamp Field) - occupancy indicators Call transfer (with/without consultation) Hold with music on hold (MOH) Call forwarding (CFU, CFNR, CFB) Automatic callback (CCBS) Do Not Disturb (DND) Call rejection, blocking anonymous callers Call signal, back and forth |
| 📱 Link2mobile™ | Connecting a mobile phone via DECT to make/receive mobile calls |
| 🎧 Headset | RJ9 jack for wired headset Wireless Bluetooth headset support Wireless DECT headset support Compatibility with hearing aids (HAC) FCC standard |
| 🔌 USB port | USB 2.0 Type A (100 mA) for USB flash drive Extended storage for images, ringtones, vCards |
| 💾 Memory | 128 MB Flash for data and firmware storage |
| 🌐 Network protocols | IPv4 (RFC0791), IPv6 (RFC2460) DHCP (RFC2131), STUN (RFC3489), ICE QoS: RSVP/DiffServ, RTCP DNS SRV, Syslog, VLAN tagging |
| 🖥️ Configuration | Web interface for configuration from PC MAC-based auto-provisioning (TFTP, HTTP, HTTPS) Integrated setup assistant (Wizard) About 200 preconfigured VoIP operators |
| 📧 Advanced services | Incoming email notifications (POP3/POP3S) Info Center with online content (weather, Internet radio) XML browser for online services Integrated calendar Direct dialing from Outlook contacts |
| 🌱 ECO functions | Low power consumption transformer ECO DECT / ECO Plus mode for radiation reduction Automatic DECT deactivation |
| 📏 Dimensions (LxWxH) | 318 x 202 x 110 mm |
| ⚖️ Weight | 1100 g (without power supply unit) |
| 🎨 Color | Black and titanium |
| 🏭 Manufacturer | Gigaset Communications (Germany) |
| ✅ Condition | Used - Good condition tested and functional |
| 📦 Delivery contents | 1x Gigaset DE900 IP PRO phone (base + handset) 1x Handset cord 1x Power supply unit Ready to use |
✨ Key Features
🎧 Exceptional HD Professional Sound
- HDSP™ (High Definition Sound Performance) technology for crystal-clear audio quality
- G.722 Wideband codec for high-definition conversations
- Expanded audio band reproducing natural vocal frequencies (50-7000 Hz)
- Reduction of ambient noise and suppression of acoustic echo
- Exceptional clarity communications as in face-to-face
📞 Professional Multi-Line Telephony
- 12 configurable VoIP SIP accounts to manage multiple phone identities
- Simultaneous connection to 4 active IP lines
- Up to 12 separate voicemail accounts
- Presentation of the number (CLIP) and name separated for each line
- Conference call bringing together up to 5 internal and external participants
- Complete PBX functions: transfer, hold, call forwarding, BLF
📇 Advanced Contact Management
- Personal directory of 500 vCards with contact photos (CLIP images)
- Display of the photo, location, and time zone of the caller during incoming calls
- LDAP support for access to the centralized company directory on the network
- Online public directories and automatic reverse search
- Block dialing with modification before sending
- Direct dialing from Microsoft Outlook
- Quick and ergonomic search via touch button
🌐 Total Multi-Network Connectivity
- Integrated Gigabit Ethernet switch to connect a PC in cascade (network port saving)
- WiFi connection 802.11b/g/n for deployment without network cabling
- Bluetooth for connecting wireless headsets or smartphones
- DECT to register up to 6 cordless handsets or DECT headsets
- Link2mobile™: connect your smartphone via DECT to make/receive your mobile calls
- Power over Ethernet (PoE) for power supply via network cable without electrical outlet
🔒 Professional Security and Encryption
- SRTP (Secure Real-Time Protocol) encryption for total confidentiality of conversations
- TLS/SIPS security of SIP signaling against interception
- Open VPN client for secure connections to remote corporate networks
- Strong authentication to prevent identity theft
- Secure configuration via HTTPS
- Ideal for sensitive sectors: finance, health, legal, administration
⚙️ Simplified Plug-and-Play Configuration
- Configuration assistant (Wizard) guiding step by step through installation
- Approximately 200 preconfigured VoIP operators (OVH, SFR, Orange, Free, etc.)
- Professional auto-provisioning based on the phone's MAC address
- Complete Web interface for configuration from PC/Mac
- Remote management via provisioning server (TFTP/HTTP/HTTPS)
- Firmware update via network for system evolution
📱 Mobility and Flexibility
- Gigaset MobileOFFICE™: nomadic profile synchronizable across multiple stations
- Change offices while keeping your personal settings
- Wireless DECT handset connection for mobility within premises
- Link2mobile™: receive your mobile calls on the landline phone
- DECT/Bluetooth headset support for freedom of movement
- USB port for storage key: take your contacts and settings with you
🏢 Professional Applications
- Businesses and SMEs: unified enterprise IP communication
- Tele-secretarial and call centers with multi-line management
- Customer service and technical support requiring HD audio quality
- Medical offices, lawyers, notaries with confidentiality needs (SRTP)
- Real estate agencies and salespeople with BLF extension modules
- Hospitality and reception with centralized LDAP directory management
- Remote work and remote offices via VPN and WiFi
- Integration into IP PBX systems (Asterisk, FreePBX, 3CX, OVH, etc.)
🎁 Your Benefits
✅ 30-day warranty for your peace of mind
📦 Secure and fast shipping with carrier tracking number
🔌 Complete delivery with power supply - ready to use
🧪 Phone tested and verified before shipping
📄 Professional invoice with 0% VAT (paper format included with each package)
📞 Gigaset hardware recognized worldwide for quality and reliability
🎧 Exceptional HD sound - professional HDSP technology
🌐 12 VoIP lines - complete solution for multi-account professionals
🔒 Maximum security with SRTP encryption and VPN client
💰 Excellent value for money for professional IP telephony
ℹ️ Important Information
🔧 Software Support:
We do not provide technical support for the installation, configuration, or setup of the IP phone. This product is intended for IT professionals, VoIP telephony administrators, or experienced users who are capable of configuring a SIP phone themselves. Comprehensive documentation is available on the Gigaset website. For technical assistance, consult your VoIP operator or telephony integrator.
📦 Delivery contents:
This announcement includes the complete Gigaset DE900 IP PRO phone (base + handset + handset cord) with its power supply unit. The phone is ready to be connected to your Ethernet or WiFi network and configured on your VoIP telephony system. Extension modules, Ethernet cable, and headsets are not included and must be purchased separately if needed.
📸 Photos and illustrations:
Photos are provided for illustration purposes only. Only the content of this announcement is authoritative for the exact product reference and included accessories. If you have any doubts about the content or specifications, please feel free to contact us before your purchase.
❓ Frequently Asked Questions (FAQ)
Q1: Which VoIP operators are compatible with the Gigaset DE900 IP PRO?
The Gigaset DE900 IP PRO is a standard SIP phone compatible with almost all operators and VoIP systems on the market. It includes about 200 preconfigured operator profiles including OVH Telecom, Orange Business, SFR Business, Free Pro, Bouygues Telecom Enterprises, as well as popular IP PBX systems like Asterisk, FreePBX, 3CX, Alcatel-Lucent OmniPCX, and Gigaset exchanges (T300 PRO, T500 PRO). If your operator is not on the list, manual SIP configuration remains simple via the web interface by entering proxy server, credentials, and ports.
Q2: Can this phone be used without an Ethernet network thanks to WiFi?
Yes, absolutely! The Gigaset DE900 IP PRO features complete 802.11b/g/n WiFi connectivity allowing for 100% wireless use. After connecting the power supply (or PoE), simply configure the WiFi connection via the phone menu by selecting your network and entering the WPA/WPA2 key. This feature is ideal for rapid deployment without network cabling, temporary offices, spaces without Ethernet infrastructure, or frequent reorganizations. WiFi offers more than enough bandwidth for VoIP (even with G.722 HD codec).
Q3: What is the Link2mobile™ feature and how to use it?
Link2mobile™ is an exclusive Gigaset feature that allows you to register your Android smartphone or iPhone on the DE900 IP PRO phone via DECT connection. Once paired, you can make and receive your mobile calls (GSM/4G/5G) directly from the landline phone, thus benefiting from the comfort of the wired handset and HD audio quality. It is perfect for saving VoIP business minutes by using your unlimited mobile plan, or for centralizing all your calls (landline and mobile) on a single device. The smartphone must remain within DECT range (up to 50m indoors).
Q4: How to add extension modules and what are they for?
The Gigaset DE900 IP PRO can accommodate up to 3 extension modules (reference S30852-H2218-R101) connected in cascade on the right side of the phone. Each module adds 14 additional programmable keys with an LCD screen, bringing the total to 56 keys (14 built-in + 42 on modules). These keys are ideal for programming speed dial numbers, BLF (Busy Lamp Field) functions displaying the availability status of colleagues, quick transfer keys, or direct lines. It is essential for telephone exchanges, secretariats, call centers, and services requiring supervision of many lines.
Q5: Can the phone be powered solely by PoE without a power supply?
Yes, the Gigaset DE900 IP PRO supports Power over Ethernet (PoE) IEEE 802.3af class 3, allowing full power supply via the Ethernet cable. If your network switch has PoE ports (802.3af or 802.3at/PoE+), simply plug in the network cable and the phone powers itself automatically without the need for a power adapter. This solution simplifies installation (one cable), reduces clutter, facilitates centralized power management, and ensures continuity in case of a power outage (if the PoE switch is on a UPS). PoE power is ideal for clean and secure professional deployments.
Q6: Is SRTP encryption really necessary and how do I activate it?
SRTP (Secure Real-Time Protocol) encryption fully encrypts your VoIP conversations to ensure their confidentiality against eavesdropping. It is essential for sensitive sectors (healthcare with medical confidentiality, legal with professional secrecy, finance, HR, executive management) and recommended for any security-conscious business. Activation requires that your VoIP server also supports SRTP (most modern PBXs offer it). Simply configure SRTP in the SIP account settings via the web interface. The phone automatically negotiates encryption with the server. TLS/SIPS secures SIP signaling in parallel.
Q7: What is the difference between this PRO model and standard IP phones?
The Gigaset DE900 IP PRO stands out for its high-end professional positioning: exceptional HDSP™ audio quality with G.722 Wideband codec, 12 VoIP accounts for multi-identity management, total connectivity (Gigabit Ethernet + WiFi + Bluetooth + DECT), SRTP/TLS encryption for maximum security, a directory of 500 contacts with corporate LDAP, 5 participant conferencing, advanced PBX features (BLF, transfers, redirects), expandability via modules (up to 56 keys), Link2mobile™, VPN client. Compared to a basic 2-line IP phone without WiFi or security, the DE900 IP PRO offers a complete professional solution for demanding users.
Q8: Is the phone guaranteed and can firmware updates be obtained?
This used phone is covered by our 30-day seller warranty against material defects. The original Gigaset manufacturer's warranty (2 years) is generally not transferable on used equipment. However, Gigaset provides free updates on its support portal, downloadable and installable via the phone's web interface. These updates fix bugs, add features, and improve compatibility with new VoIP servers. For advanced technical support, consult the official Gigaset documentation or the very active community forums. The DE900 IP PRO has an excellent reputation for reliability and longevity.
📧 Have a question? Contact us before purchasing!
Thank you for your trust and happy shopping! 🛒
