Understanding Intercom Technologies
A SIP (Session Initiation Protocol) intercom system operates over IP networks, enabling audio and video communication using internet-based protocols. These systems offer flexibility, high-definition video and audio, and integration with other smart systems. SIP systems are ideal for modern buildings that require scalable, secure, and smart access management.

Analog intercoms use electrical signals transmitted over dedicated wiring to enable voice communication between endpoints. They are simple in design and tend to have fewer features compared to SIP-based systems. Analog systems cannot integrate with networked devices or cloud platforms and typically do not support advanced functionalities such as video calls, mobile app access, or facial recognition.
Key Differences Between SIP and Analog
The most notable differences include the communication method (IP-based vs. analog wiring), scalability, integration capabilities, and feature sets. SIP systems like those provided by Uniwin-Global offer smart functionalities, remote control, and seamless integration with third-party platforms using protocols like MQTT/HTTP/WEBSOCKET. In contrast, analog systems are limited in their adaptability and typically require more manual operation.
Installation and Setup Costs
Initial Hardware Investment
While SIP intercom systems may have a higher upfront hardware cost than analog systems, the investment pays off through functionality. For example, Uniwin-Global’s SIP devices, such as the WI704 (7-inch indoor monitor with split-screen), include multi-zone security monitoring, two-way video calls, elevator control, and alarm integration. Analog counterparts often require separate devices for these features, increasing cumulative costs.
Infrastructure Requirements
Analog intercoms need dedicated cabling between each unit, which can be complex and expensive in multi-unit properties. SIP systems operate over standard Ethernet networks and even support POE (Power over Ethernet), minimizing wiring needs. The WOZ01 mini outdoor station from Uniwin-Global is a great example of a compact SIP solution that integrates easily into existing IP infrastructure.
Installation Time and Labor
SIP installations are faster when the existing IP infrastructure is in place. With analog systems, installation labor increases significantly due to additional wiring requirements. Moreover, Uniwin-Global offers OEM/ODM services that include full system assembly and testing, reducing integration time for property developers and managers.

Maintenance and Operating Expenses
Ongoing Maintenance Needs
Analog systems often suffer from wear and tear on physical wiring and outdated components. SIP systems, particularly those offered by Uniwin-Global with defect rates below 1% and a motherboard warranty period of 1 year, are built with high-quality components to reduce maintenance needs.
Troubleshooting and Repairs
SIP systems can be monitored and diagnosed remotely, allowing quicker resolution of issues. Analog systems usually require on-site inspection. Uniwin-Global’s devices support remote management via cloud platforms and mini-programs, offering high serviceability for property managers.
Energy Consumption Comparison
SIP systems utilizing POE technology consume less power overall by reducing the need for separate power supplies. This makes them more energy-efficient compared to traditional analog systems that rely on multiple powered components.
Scalability and Flexibility
Adding New Units or Locations
Adding new units to an analog system often requires extensive rewiring. SIP systems allow easy addition through network expansion. Uniwin-Global’s apartment intercom solution supports one-to-one and one-to-many calling modes, making it highly scalable.
Integration with Other Systems
SIP intercoms integrate with various platforms for access control, visitor management, and surveillance. For example, Uniwin-Global’s solutions connect with face recognition attendance systems and visitor logs via HTTP/Websocket protocols.
Remote Management Capabilities
With mobile apps or cloud dashboards, property managers can monitor access events, grant permissions, or unlock doors remotely. The WO501 terminal supports WeChat mini-programs for real-time door operations and management.
System Longevity and Reliability
Expected Lifespan of SIP vs. Analog
SIP intercoms are built with modern hardware designed for long-term use. Uniwin-Global uses original and packaged materials with strict selection standards from PCB to components, ensuring durability over years of operation.
Performance Stability Over Time
Digital systems maintain consistent quality over time without degradation in audio or video quality. Analog signals are prone to distortion due to cable aging or interference.
Adaptability to Future Upgrades
SIP systems can be upgraded via firmware or software updates without hardware replacement. Uniwin-Global provides rich custom APIs on their Android/Linux boards like the M588, enabling tailored development for evolving property needs.
Feature Set and User Experience
Audio and Video Quality
SIP systems offer HD video and clear audio even in challenging lighting conditions. The WR501 attendance terminal uses a wide dynamic HD face recognition camera that adapts to strong or weak lighting environments.

Smart Features and Connectivity
Uniwin-Global’s SIP devices support functions like facial recognition (up to 20,000 faces), blacklist alerts, liveness detection, remote unlocking, motion detection, and alarm integration. These features are absent in analog intercoms.
Accessibility for End Users
Mobile accessibility through mini-programs or apps allows residents to receive calls, view visitors, or unlock doors remotely—enhancing convenience significantly compared to fixed-point analog interfaces.
Why Choose Uniwin-Global’s SIP Solutions
Proven Performance in Real-World Settings
The relevant products and solutions have been widely used by many well-known brand customers in related industries. Our attendance terminals, apartment intercoms, and villa intercoms have been successfully deployed across residential communities, hospitals, schools, hotels, malls, office buildings, public service venues, and construction sites.
Customization Options for Different Properties
Uniwin-Global specializes in providing customized industrial motherboards and complete machines. Whether you need a 5” embedded board or a full-featured 10” intercom terminal tailored to your project’s layout, our R&D team delivers flexible OEM/ODM solutions efficiently within 45–60 workdays.
Support, Training, and After-Sales Service
We have a strong technical support team. Thus, customer issues will be responded to within 2 hours and resolved within a maximum of 48 hours. We ensure a seamless experience from product selection through installation to post-sales troubleshooting.
FAQ
Q: Can SIP intercoms replace analog systems in older buildings?
A: Yes. SIP intercoms can often utilize existing network cabling or be integrated via POE adapters. Uniwin-Global offers compact models like WOZ01 suitable for retrofits.
Q: What is the face database capacity of Uniwin-Global’s terminals?
A: Support 5,000 to 50,000 faces, depending on the model—for example, E518-V supports up to 5000 faces with dynamic face recognition.
Q: How can I manage multiple buildings remotely?
A: Uniwin-Global’s solutions support deployment on LAN or WAN networks with centralized cloud management platforms accessible via browser or mobile app.
Q: Do your products comply with international safety standards?
A: We conform to International Product Certification and Compliance and Safety Certification.