Product Advantages HD Voice and Professional Audio Processing This Classic IP Phone places a strong emphasis on call clarity, utilizing an enterprise-grade HD Voice solution to deliver clean, transparent audio free of background noise. Whether for daily office communication, the high-intensity call volume of a contact center, or environments with strict audio quality requirements—such as government service counters—this device performs flawlessly, even during prolonged use.
The audio-related specifications are as follows:
- Supports HD Voice calling
- Supported audio codecs: Opus, G.711, G.722, G.729AB, iLBC, AMR-NB/WB
- Built-in AEC (Acoustic Echo Cancellation), AGC (Automatic Gain Control), and ANR (Automatic Noise Reduction)
- Supports DTMF detection (in-band/out-of-band) and SIP INFO
- Full-duplex hands-free calling, delivering stable and consistent audio
Its target applications are clearly defined:
- Standard desk phones for daily use in SMEs
- Classic IP Phones for contact centers
- Dedicated IP phones for government service counters and hotel front desks
Dual Network Ports with PoE Support: A Much Tidier Desktop
The device features two built-in 10/100 Mbps Ethernet ports that support daisy-chaining (pass-through connectivity) and Power over Ethernet (PoE). This eliminates the need for a separate power adapter on the desktop, making cabling and installation significantly simpler.
Specific network support features include:
- 2× RJ45 100 Mbps Ethernet ports (supports daisy-chaining for internet access)
- Standard PoE support (optional)
- IPv4 / IPv6 Dual Stack
- VLAN and QoS (Voice Priority) support
- Compatible with centralized power management via network switches
The practical benefits are a cleaner, clutter-free desktop environment and reduced deployment costs.
Dual SIP Accounts: Comprehensive Office Telephony Features
The Classic IP Phone supports two active SIP accounts simultaneously, allowing a single device to be registered with two distinct numbers. This proves highly practical for scenarios involving front-desk call transfers and the separation of internal and external phone lines. Call Feature List:
- Supports simultaneous registration of 2 SIP accounts
- Caller ID, Call Hold, Mute, Do Not Disturb (DND)
- Call Forwarding, Call Transfer, Call Waiting
- 3-Way Conference Calling
- Redial, Call Return, Speed Dial
- Phonebook capacity: 1000 entries
- Call History: 40 entries each for Received, Missed, and Dialed calls
It covers virtually all the features required for daily business calling and collaborative communication.
Extensive Compatibility: Connects with All Major Platforms
Utilizing the standard SIP protocol, this device integrates seamlessly with mainstream IP-PBXs, Softswitches, IMS systems, and cloud telephony platforms available on the market. It is essentially "plug-and-play," requiring no complex modifications or troubleshooting.
Compatibility Details:
- Supports SIP v1 / v2 (RFC2543, RFC3261)
- NAT Traversal: STUN / TURN / ICE
- Encrypted Transmission: RTP / RTCP / SRTP
- Compatible with Asterisk, FreeSWITCH, and major cloud communication platforms
- Supports TR-069 for centralized remote management
- Supports OpenVPN for secure access
It offers stable and reliable performance for use in enterprises, hotels, government agencies, and retail chain stores.
Classic Design: Intuitive and Easy to Use
Adopting the classic aesthetic of mainstream business phones, the "Classic IP Phone" features a professional look and a user-friendly layout. Constructed from matte-finish ABS material, it is both stain-resistant and durable. The operational logic is straightforward; employees can pick it up and start using it immediately with virtually no training required.
Key Design Highlights:
- Classic business aesthetic with a matte ABS casing
- 2.3-inch (132×64 resolution) backlit LCD screen
- Supports multi-language display
- Ergonomically designed handset for comfortable, fatigue-free long-duration calls
- Dual-microphone pickup system for cleaner, more effective noise cancellation
- Adjustable stand angle ensures stable placement
Suitable for deployment in various settings, including office desks, reception areas, call centers, and conference rooms.
Remote Management and OTA Updates: Hassle-Free Operations
The administrative interface is web-based and also supports centralized management via TR-069. Tasks such as batch configuration, remote debugging, and remote firmware updates can all be handled with ease, significantly lightening the workload for IT maintenance teams.
Management Features:
- Web-based configuration interface
- Remote firmware updates, remote restarts, and factory resets
- Batch parameter deployment
- Remote status monitoring
- Background OTA updates (no need to physically dismantle or return the device to the factory)
The longer it is in service, the more stable it proves to be, resulting in low long-term maintenance costs.
Robust Power Supply and Hardware Foundation: Built for Continuous Operation
The power supply features a wide-range design compatible with global voltage standards. Combined with solid hardware construction, the device is fully capable of running continuously—24 hours a day, 7 days a week—in enterprise environments.
Hardware Specifications:
- Power Input: AC 100–240V
- Output: DC 5V/500mA
- Operating Temperature: -10°C to 50°C
- Quad-core ARM Processor; 1GB RAM + 1GB ROM
- Dimensions: 204 × 202 × 42 mm
- Net Weight: 0.8 kg
With its overall focus on stability and durability, this device is an ideal choice for large-scale enterprise deployments.
Versatile Applications and Exceptional Value
Positioned as an entry-level enterprise IP phone, the Classic IP Phone delivers ample performance while maintaining excellent cost-efficiency. It is well-suited for a wide range of scenarios, including small and medium-sized enterprises (SMEs), call centers, hotels, and government offices. Common Deployment Scenarios:
- SME Office Desk Phones
- Call Center Agent Stations
- Hotel Guest Room and Front Desk IP Phones
- Government Service Counters
- Unified Communications for Chain Stores, Business Outlets, and Office Buildings
Reasons to Choose the Kaer KS30 Classic IP Phone
- HD Voice + Professional Opus Codec
- Dual SIP Accounts: Seamless Handling of Multiple Simultaneous Calls
- Dual Ethernet Ports + PoE Support: Simplified Cabling
- Compatible with Mainstream IP-PBX, Softswitches, and Cloud Platforms
- Supports TR-069 for Centralized Remote Management
- OTA Remote Upgrades: Ensures Long-Term Stability and Reliability
- Classic Aesthetics with Ergonomic Design for a Comfortable Handset Grip
- High Cost-Effectiveness: Ideal for Large-Scale Deployments
- Available for OEM/ODM Customization
