The Grandstream GSC3570 is an integrated SIP intercom and control station designed for secure facility communication, door access control, and real-time video monitoring. With its 7-inch touch display, HD audio, dual-band Wi-Fi, PoE support, and interoperability with GDS door systems and IP cameras, the GSC3570 serves as a central control panel for residential, commercial, and enterprise environments. This FAQ document provides clear, practical answers to common operational and configuration questions to help users understand and efficiently operate the GSC3570.
Product Overview & General Operation
The GSC3570 is an integrated SIP intercom phone designed for door control and two-way intercom communication. It provides video monitoring, secure door access control, and SIP-based voice calling. It is typically wall-mounted inside buildings for security and facility control operations.
It features a 7-inch 1024×600 capacitive touch-screen TFT LCD, including a physical Home key for quick navigation.
The GSC3570 supports 4 SIP lines and up to 4 SIP accounts, this permits users to configure multiple extensions or services on the device.
Yes. The device features dual speakers and a built-in microphone supporting wideband codecs such as G.722, along with advanced echo cancellation (AEC) and noise handling to improve voice clarity.
Yes. It supports dual-band Wi-Fi (2.4 GHz & 5 GHz) using 802.11 a/b/g/n/ac, allowing flexible installation without requiring wired network connectivity.
Yes. It supports IEEE 802.3af Class 3 PoE, meaning it can be powered directly from a PoE-enabled network switch. It may also be powered using a 12V DC input if PoE is not available.
The device includes dual 10/100 Mbps Ethernet ports. One port supports PoE for power and network, while the other functions as a LAN passthrough port.
The GSC3570 runs a Linux-based operating system (Linux 4.4) optimized for SIP communication, monitoring, door control, and local applications.
Built-in applications include Contacts, Call History, Settings, Voicemail, and Clock, supporting daily communication and device management tasks.
Yes. It integrates seamlessly with Grandstream IP PBXs, GDS37xx door systems, GSC36xx cameras, video conferencing systems, and SIP platforms, enabling unified security and communication functionality.
Security features include TLS, SRTP, 802.1x, encrypted configuration files, random administrator passwords, MD5 authentication, and secure provisioning options, helping protect communications and configuration access.
The device supports H.264 video decoding with resolutions up to 720p at 30 frames per second and a maximum video bitrate of 2 Mbps.
The device supports operating temperatures from -10°C to 50°C, storage temperatures from -20°C to 60°C, and humidity levels from 10% to 90% non-condensing, making it suitable for indoor installation environments.
Installation, Wiring & Initial Setup
The package contains the GSC3570 unit, an installation bracket, a PH2.0-10P alarm cable, self-tapping screws and anchors, and a Quick Installation Guide. Users should verify the package contents before installation and contact an administrator if anything is missing.
Yes. The GSC3570 supports both on-wall and in-wall mounting options. The included bracket and screws are used to secure it during installation.
The GSC3570 can be powered using IEEE 802.3af PoE via the network cable or through a 12V DC power input (recommended 12V/1A, range 9–15V). A Micro-USB 5V/2A supply may be used only if necessary.
There are two 10/100 Mbps Ethernet ports — one supports PoE and the other functions as a LAN passthrough port.
Connect the GSC3570 to the network and ensure it is powered on. From the LCD, navigate to Settings → Status → Network Status to find the IP address. Enter this IP address into a web browser on a PC in the same network, then log in using the admin username and the random password printed on the back label.
The username is “admin”, and the password is a unique randomly-generated code printed on the device label. This should be changed after the first login for security.
Yes. From the LCD menu, swipe to the second home page and open Settings to access network information, features, and system configuration options.
The device supports 1 active alarm input (voltage-based 9–15V on IN+) and 3 passive switch-based alarm inputs (AIN1/AIN2/AIN3) that detect open/close contact signals such as buttons or door sensors.
The relay supports up to 125VAC/0.5A or 30VDC/2A, with normally open or normally closed contact modes. Incorrect or higher voltage must not be used to avoid hardware damage.
Yes. The electric strike or lock can be wired to the relay Alarm_Out contacts (COM1 and NO/NC), and the device can open the door when triggered via SIP or configured features.
The voltage for Active Alarm Inputs must be between 9–15V, and wiring polarity must be correct. The relay output current must not exceed 0.5A at 125VAC or 2A at 30VDC. Incorrect voltage or polarity may damage the device.
From the LCD, go to Network → Wi-Fi, enable Wi-Fi, select the network SSID, and enter the password. Static IP or DHCP can be configured during setup. The device will reboot when Wi-Fi is activated.
It is recommended to use DC 12V power at a minimum of 1A if additional devices are powered or controlled through the alarm ports. PoE remains fully supported.
The device supports a MicroSD/SDHC/SDXC card up to 256GB, which is used for storing snapshots and recorded data. The SD card must be formatted using the GSC3570 before use.
Door Control, Monitoring & Security Operation
The GSC3570 can be configured with up to 20 GDS37xx devices for door monitoring and control. Each GDS device can support up to two remote-controlled doors, and the user can configure SIP/RTSP viewing and remote door unlock credentials for each one.
The GSC3570 has one physical relay control circuit, meaning only one physical lock or strike can be wired directly to the device for secure internal relay control. If more doors need to be controlled, the additional doors must be opened remotely through SIP communication with the GDS37xx units rather than through the GSC3570 relay.
Secure Open Door Peering means the door strike is wired to the GSC3570 inside the building rather than to the outdoor GDS unit, making it harder for someone to tamper with the wiring from outside. The GSC3570 and GDS37xx exchange authentication information and allow opening the door via RFID, PIN, SIP call, or remote control — but the actual relay action happens inside the GSC3570, enhancing security.
Yes. When paired with supported GDS37xx firmware, the GSC3570 can open the door directly from the Monitor → Door System page by pressing the open-door icon — without starting a SIP call. If two doors are configured, the user is prompted to choose which door to open. A confirmation message appears once the door is successfully opened.
Once the GDS37xx device is properly configured and the Open Door icon on LCD option is enabled, the GSC3570 displays one or two virtual buttons on the idle screen depending on the number of configured doors. The user can tap these buttons to trigger door opening during idle state or during a call.
Only one GDS37xx device can be paired for the virtual open-door function. If the user configures another one, the new configuration overwrites the previous pairing silently. Only the last one configured will work with the virtual door-open icons.
Yes. The GSC3570 supports external service integration, meaning it can send DTMF PIN codes or even HTTP GET requests to compatible third-party door access systems during SIP calls. A softkey will appear during the call to send the preset door-open PIN or HTTP request command
The GSC3570 can replace a traditional wired doorbell. A physical button is wired into an AIN input so when pressed, the GSC3570 plays a DING-DONG tone and displays a virtual open-door button if a door strike is connected to the relay. Up to three doorbell buttons can be wired (e.g., front, back, garage), but only one lock can be controlled because there is one relay port.
Arming Mode allows the GSC3570 to behave like a security panel. The device supports four zones that can each be assigned to alarm sensors such as motion detectors, gas sensors, smoke detectors, or emergency buttons. Each zone can be configured as instant alarm, delayed alarm (with entry/exit timers), or 24-hour alarm. Profiles such as Outdoor, Indoor, Sleeping, and Custom allow different combinations of zones to be enabled depending on usage.
The SOS function allows assigning a dedicated emergency button that triggers automatic calls to up to four preset numbers. Calls can be made in serial hunting mode (call one after another until answered) or parallel mode (all called at the same time). The user can also choose which SIP account will place the SOS call.
Yes. When an alarm input is triggered and configured for outbound alerting, the GSC3570 will automatically place calls to up to four configured numbers, using either parallel or serial hunting. The system uses the selected SIP account to send these calls.
Yes. The Alarm Output relay can control a third-party siren, strobe, or strike device if wired to the relay. It can activate when calls are received or when alarms or door events occur — depending on configuration.
Yes. When an SD card is installed and formatted, the GSC3570 stores snapshots from doorbell events, motion alarms, or manual screenshot actions during RTSP video monitoring or SIP video calls. Images are saved into folders organized by date on the SD card.
When a configured doorbell input is triggered, the GSC3570 plays the doorbell tone, shows a green virtual open-door icon, and displays alarm notification icons along with flashing LEDs. Users can review the message from the Messages screen, and once acknowledged, the alerts disappear. All these options can be adjusted to be displayed or hidden, from the webui settings of the GSC3570 device.
IP Cameras, RTSP Monitoring & Video Functions
The GSC3570 supports up to 32 IP cameras. Each camera can be configured either through the web interface or directly from the LCD menu. You simply define the camera name, connection type (SIP or RTSP), SIP/IP address, and the SIP account to use for communication.
The device supports two main communication methods:
• SIP mode — where the camera is contacted like a SIP endpoint.
• RTSP streaming mode — using RTSP over TCP, UDP, or Multicast.
Users can choose the desired method depending on the type of camera and deployment needs.
From the idle screen, tap Monitor → IP Camera → Add (+). Enter the device name, assign the account used to call the camera, and configure the device number (SIP extension or IP/RTSP address). Once saved, the camera can be monitored directly from the Monitor menu.
Yes. When a SIP call is active and an RTSP source has been preconfigured, an RTSP icon appears on the call screen. Tapping this icon lets the user switch to live video monitoring. The SIP call is automatically placed on hold while monitoring, and users can later return to the call screen. This improves safety monitoring in public or emergency environments.
If the caller terminates the call while the GSC3570 is monitoring RTSP video, the RTSP stream continues playing automatically on the GSC3570. This allows uninterrupted monitoring of the scene even after the conversation ends.
Yes. When viewing RTSP video, a Speaker icon appears on screen. Tapping it displays a volume bar, allowing the user to increase or decrease the RTSP audio level. Tapping elsewhere exits the volume control panel.
Yes. During RTSP streaming, a Snapshot button appears in the middle of the screen. Pressing it captures the current frame and saves it to the SD card. A confirmation path briefly appears showing where the image is stored. The function requires an SD card to be installed.
Yes. During a SIP video call, tapping More → Screenshot captures the current display and stores the snapshot on the SD card. Files are organized in folders by date, under the videoshot directory.
Screenshots are saved onto the SD card in a folder called videoshot. Inside that directory, images are grouped into folders based on the date they were taken. Users can browse and review them via the File application. An SD card must be formatted and installed first.
Yes. The Monitor app supports both Door Systems (GDS37xx) and IP Cameras. Users can switch between devices, open doors, view live video, and place SIP calls to door systems — all from the same interface.
The GSC3570 supports H.264 video decoding at resolutions up to 720p, with 30 frames per second and bitrates up to 2 Mbps. This applies to both RTSP streams and SIP-based video calls.
In environments such as schools, hospitals, dormitories, libraries, gyms, or public buildings, a user can place a call to security — and security staff can instantly switch to RTSP camera monitoring mid-call, observe the scene in real time, then return to the call. The caller cannot disconnect the GSC3570 side — the call must be ended from the caller’s device.
Yes. Users can access the Monitor menu and select the IP camera to start a direct RTSP live view. This is independent of calls and works for up to 32 configured cameras.
Yes. Even if the door system (such as GDS3705) does not include a video camera, the GSC3570 can still open the door from the interface during SIP or RTSP-based operations, provided the device has been configured for door control.
System Configuration, LCD Features & Maintenance
The GSC3570 supports up to 4 SIP accounts. Each account can be configured with its own SIP server, authentication credentials, outbound proxy, voicemail number, NAT traversal options, and dialing rules. Accounts can be individually activated or disabled as needed from the Accounts menu.
The LCD menu provides access to most daily-use functions such as network settings, account status, SIP account setup, arming mode, SOS settings, alarms, audio/display controls, SD card options, shortcuts, and reboot/reset tools. The web UI, however, allows deeper configuration and administration, including advanced SIP, provisioning, and security options.
The idle screen displays shortcuts such as Call, Monitor, Settings, SOS, Messages, Contacts, and others depending on user configuration. At the top-right system panel, the device shows SIP registration status, storage availability, IP address, Wi-Fi connection, PoE status, SD card status, and FTP server state. Tapping certain icons jumps directly to the related configuration menu.
Yes. Users can add desktop shortcuts for actions such as speed dialing, RTSP streams, HTTP triggers, or multicast streaming, and they may select which icons appear on the home page (up to nine arranged in a 3×3 grid). The Settings icon cannot be removed, and icons cannot be freely repositioned beyond the grid layout.
Users can control media volume, ringtone volume, doorbell tone, button tones, ringtone selection, LED indicators, LCD brightness, screen timeout, and screensaver timing. The call screen icons may also be displayed in standard or large format. These settings allow adapting the device for loud, quiet, or professional environments.
A PIN-based screen lock can be enabled to prevent unauthorized access to the device menus. The PIN must contain at least six digits, and once enabled, the device requires the password to unlock menu access. This is useful in public or shared-access installations.
The GSC3570 supports microSD/SDHC/SDXC cards up to 256GB. The SD card is used to store snapshots from door events, motion alarms, RTSP streams, and SIP video calls. The SD card must be formatted using the GSC3570 menu before first use, and it can be mounted or uninstalled from the LCD menu.
The GSC3570 includes an optional FTP server that allows other devices (such as cameras) to upload alarm snapshots to the device. The user can enable the FTP service, configure a port, username, and password, or allow anonymous FTP if credentials are left blank. This feature is commonly used for alarm-triggered photo storage.
Firmware and configuration files can be retrieved via HTTP, HTTPS, or TFTP. The device can automatically check for new firmware at bootup or skip auto-checking. Server paths, usernames, and passwords can be defined, and updates may be triggered manually using Update Now from the system update menu. TR-069 provisioning is also supported for mass deployment.
Two access roles exist:
• Admin level — full access to all settings using the random password printed on the device label.
• User level — limited to basic and status pages (disabled by default until a user password is set by the admin).
Passwords are case-sensitive, and strong password practices are recommended.