KAER manufactures managed payphone systems for schools, correctional facilities, campuses, public service locations, and other shared or controlled environments. As a B2B commercial use payphone manufacturer, KAER supplies rugged wall-mounted phones, 4G indoor payphone models, VoIP payphones, touchscreen video terminals, and card-authenticated communication devices for institutional projects.
Depending on the model and project configuration, available functions may include:
4G LTE, VoLTE, SIP, or VoIP calling
Voice and video communication
Approved-number calling and call restrictions
Face recognition, card swipe, or card insertion
Scheduled calling and emergency hotlines
Metal housings and armored handset cords
Remote configuration and device management
Call records and usage reportin
The HS03 is a rugged wall-mounted 4G voice payphone with a die-cast metal housing. It is suitable for schools, campuses, correctional facilities, and other high-use locations where durable hardware and controlled calling are required. Optional face or card authentication can be added for user identification.
For campus projects, the HS03 can also be configured as a student calling 4G indoor payphone, allowing administrators to define approved contacts, calling schedules, authentication methods, and other communication rules according to project requirements.
The HS06 combines an 8-inch touchscreen with 4G and SIP-based voice or video calling. It is intended for projects requiring visual interaction, identity verification, and centralized management.
Android and large-screen metal models support application-based workflows and more visual user interfaces. For simpler indoor installations, the white-housing model can be configured as a 4G card indoor payphone, providing card-based user authentication together with managed calling functions.
KAER payphone systems can be configured for a range of institutional and commercial environments, including:
Schools and student accommodation
Campuses and training centers
Correctional and controlled facilities
Public service locations
Factories and industrial sites
Shared communication areas
Telecom-operated public calling projects
For school deployments, calling permissions, student authentication, account management, emergency workflows, and usage records can be configured according to the project. See our RFID Card Payphones for Schools: What Buyers Should Check Before Deployment guide for more information about student calling systems.
Before selecting a model, confirm the installation environment, indoor or sheltered placement, required enclosure protection, local mobile operator, LTE bands, SIP platform, authentication method, call permissions, emergency workflow, and management requirements.
For a 4G indoor payphone, buyers should also confirm local LTE and VoLTE compatibility before deployment. Card-based projects should define the required card type, account logic, user authentication process, and backend management workflow during the project-planning stage.
Outdoor, vandal-resistant, or explosion-protected applications require separate confirmation of the enclosure, installation method, environmental rating, and applicable certification. These terms should not be applied to every model in the category.
Read our Managed Payphone System Requirements guide for a practical deployment checklist covering network, authentication, call control, physical protection, platform integration, and pilot testing.
KAER supports telecom operators, system integrators, institutional solution providers, and distributors with model selection, SIP configuration, firmware adaptation, authentication logic, UI and branding, platform integration, and OEM/ODM development.
Whether your project requires a wall-mounted voice terminal, a card-authenticated indoor phone, a touchscreen video payphone, or a managed commercial use payphone, the final configuration should be selected according to the network, users, installation environment, and required calling workflow.
Contact KAER with your target environment, network or operator, user workflow, authentication requirements, and deployment quantity.
