Grandstream GDS3705 Door Phone
![]() | The GDS3705 was built for users looking for a strong audio-only facility access and security monitoring solution that can be deployed in environments of all sizes. The GDS3705 comes equipped with a zinc alloy metal casing, making it weatherproof and vandal resistant and offers alarm-in and alarm-out support for integration with existing security devices.
The GDS3705 integrates with Grandstream’s free management utility software, GDS Manager, allowing RFID card information. |
Features
Keypad for secured entry
Supports SIP calls to IP phones to facilitate communication
HD audio options with up to 1.5m of audio input and 3m of audio output
Built with a metal casing to make it weatherproof and vandal resistant
Integrated PoE to power the device and provide a network connection
Built-in dual microphone and HD loudspeaker with advanced AEC offers intercom functionality
Built-in RFID Chip Reader *
User Information
DTMF code: For Poly Desk phones and all phones on Cloud PBX Deployments, there is a DTMF code that triggers the door switch. It can be up to 4 characters in length.
Open Door soft key: With On-Premise NEWT PBX’s, the Local IP address is used to enable enhanced features for Grandstream desk phones. Once configured with appropriate local IP addresses, the phone displays the “Open Door” soft key. This key automatically sends the open-door code to the door phone and can be activated either during the call or when the call is still in the ringing state.
Multiple Answering: You can set the list of extensions that are dialed when the door phone call button is pressed.
Extension Configuration
Hardware settings can then be modified in the Extension Details screen. This screen is available for NEWTCF Admin users.

From the Extension Basics Tab, click on the Pencil Icon at the end of the line item for the Door Phone, to get to the extension details screen
Add the Extension Name
Add the Door Code: This is the numeric DTMF code that triggers the door switch. It can be up to 4 characters in length.
Call Group: This is the list of extensions that are dialed when the door phone call button is pressed. Click on the Add + button to add additional phones.
Support Information
* RFID capability is included in this hardware; however, access-control installation and configuration require a certified security integrator. Fibernetics does not provide installation or support for RFID implementations.
Please note that if a customer decides to use RFID - it will be treated as a 3rd party SIP device at that point.
Related Articles
MS TEAMS Call Settings
Call Settings Options Instructions
Grandstream GBX20 Expansion Module
Quick Start Set up Guide
Grandstream GRP2624
Grandstream GRP2624 Quick Start Guide
Grandstream GRP2615
Grandstream GRP2615 Quick Start Guide
Grandstream GRP2613
Grandstream GRP2613 Quick Start Guide
Poly Rove 20
Rove 20 Handset Quick Start Guide

