1. Introduction
The Grandstream GDS3702 is an advanced HD audio IP intercom system designed for secure access control in various building environments. This system integrates a built-in microphone and speaker for two-way communication, supports electric lock integration for door control, and offers alarm input/output for compatibility with existing security systems. It leverages SIP/VoIP technology for reliable communication and is built with a durable, weatherproof, and vandal-proof metal casing. The GDS3702 provides a comprehensive solution for modern access control and intercom needs.
2. Package Contents
Verify that all items are present in your package:
- GDS-3702 Door Intercom Unit
- Mounting Kit (screws, anchors)
- Wiring Connectors
- Quick Installation Guide
3. Key Features
- HD audio options with up to 1.5 m audio input and 3 m audio output for clear communication.
- Supports SIP calls to IP phones, facilitating seamless communication within your network.
- Constructed with a robust metal casing, ensuring weatherproof (IP66) and vandal-proof durability.
- Features two relays for electric lock and alarm output, and two alarm inputs for connection to an exit button and door sensor.
- Integrated Power over Ethernet (PoE) for simplified power and network connectivity via a single cable.
- Built-in microphone and speaker provide comprehensive voice options and intercom functionality.
4. Setup and Installation
Proper installation is crucial for the optimal performance of your GDS3702 system.
4.1 Mounting the Device
The GDS3702 is designed for surface mounting. Choose a suitable location near the door or entry point, ensuring it is within reach of network and power connections.
Figure 1: Front view of the GDS3702 intercom unit, showing the call button and speaker grille.
Figure 2: A slightly different angle of the GDS3702, highlighting its sleek design.
4.2 Wiring and Power Options
The GDS3702 supports two primary power options:
- Power over Ethernet (PoE): If using a PoE switch (Class 3), connect the network cable to the Network Port. This provides both power and network connectivity.
- External Power Source: Alternatively, use a DC12V, 1A minimum power source (not provided) connected to the Power Port. Ensure proper polarity.
Refer to the diagram below for wiring connections, including network, power, electric lock, and alarm inputs/outputs.
Figure 3: Rear view and wiring diagram of the GDS3702, illustrating connections for network, power, and external devices.
4.3 Integration with Security Systems
The GDS3702 can be integrated with electric locks and existing security systems using its relay outputs and alarm inputs. Consult the detailed wiring instructions in the full installation guide for specific connections.
5. Operating Instructions
5.1 Basic Intercom Functionality
When a visitor presses the call button on the GDS3702, it initiates a SIP call to a pre-configured IP phone or a group of phones. Users can then communicate with the visitor using the two-way HD audio.
5.2 Door Unlocking
During an active intercom call, authorized users can remotely unlock the connected electric door lock by entering a specific code on their IP phone's keypad. Refer to your system administrator for the correct unlock code.
5.3 Configuration and Management
The GDS3702 is managed using Grandstream's free GDS Manager software. This software allows for comprehensive configuration of network settings, SIP accounts, call routing, access codes, and integration with other Grandstream devices and third-party IP systems.
6. Maintenance
To ensure the longevity and optimal performance of your GDS3702, follow these maintenance guidelines:
- Cleaning: Periodically wipe the unit with a soft, damp cloth. Avoid abrasive cleaners or solvents.
- Inspection: Regularly check for any physical damage or loose connections.
- Firmware Updates: Keep the device firmware updated to benefit from the latest features and security enhancements. Refer to the Grandstream website for firmware releases and update procedures.
7. Troubleshooting
If you encounter issues with your GDS3702, consider the following common troubleshooting steps:
- No Power: Verify that the PoE connection is active or that the external power adapter is correctly connected and supplying power.
- No Network Connectivity: Check the network cable connection and ensure the network port LED indicators are active. Confirm network settings via the GDS Manager software.
- No Audio: Ensure the microphone and speaker are not obstructed. Check audio settings in the GDS Manager software.
- Door Not Unlocking: Verify the electric lock wiring and ensure the unlock code is correctly configured and entered.
- Call Issues: Confirm SIP registration status and call routing settings in the GDS Manager software.
For more detailed troubleshooting, refer to the comprehensive user manual available on the Grandstream website or contact Grandstream technical support.
8. Technical Specifications
| Feature | Specification |
|---|---|
| Product Dimensions (L x W x H) | 8.54 x 4.72 x 0.47 inches |
| Item Weight | 1.48 pounds |
| Material | Metal |
| Power Source | Corded Electric (PoE or DC12V, 1A minimum) |
| Compatible Devices | VoIP services, IP phones, security systems, computer systems |
| Weatherproof Rating | IP66 |
| Vandal Proof | Yes |
| Audio Input/Output Range | Up to 1.5m input, 3m output |
| Relays | 2 (for electric lock and alarm output) |
| Alarm Inputs | 2 (for exit button and door sensor) |
| Telephone Type | Corded |
| Dialer Type | Tone Dialing |
| Answering System Type | Digital |
9. Warranty and Support
For detailed warranty information, please refer to the official Grandstream website or the warranty card included with your product.
For technical support, product documentation, and firmware updates, visit the Grandstream support portal: www.grandstream.com/support.
