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HP JF821AR 2 x Ports ISDN-S/T Voice Interface SIC Interface Module
- 2 x Ports ISDN-S/T interface
- Supports ISDN Basic Rate Interface (BRI)
- Voice and Data connectivity
- SIC (Switch Interface Card) form factor
- Designed for specific HP ProCurve/FlexNetwork switches
- Enables integration with ISDN networks
- Provides digital voice and data transmission capabilities
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Product Overview
The HP JF821AR is a 2-port ISDN-S/T Voice Interface SIC Module, identical in function to the JF821-61101. It enables compatible HP switches to connect to ISDN networks for voice and data services using the SIC form factor.
Technical Information
| Product Type | Voice Interface Module |
| Brand | HP |
| Model | ISDN-S/T Voice Interface |
| SKU | JF821AR |
Additional Specifications
| Interface Type | ISDN-S/T |
| Number of Ports | 2 |
| Form Factor | SIC |
Product Description
The HP JF821AR is a specialized interface module designed to bring ISDN-S/T connectivity to compatible HP networking devices. ISDN (Integrated Services Digital Network) is a set of communication standards for digital transmission of voice and data over telephone lines. This module specifically supports the S/T interface, which is a reference point in ISDN networks, allowing for the connection of terminal equipment like phones, fax machines, or data modems. With two ISDN-S/T ports, this module enables devices to connect to ISDN Basic Rate Interface (BRI) lines. BRI typically provides two 64 kbit/s B-channels for voice or data and one 16 kbit/s D-channel for signaling and control. This makes the module suitable for applications requiring digital voice transmission, high-speed data transfer over ISDN, or integration with legacy ISDN infrastructure. Designed in the SIC (Switch Interface Card) form factor, this module is intended for installation into specific HP switch chassis that support this type of expansion card. It allows network administrators to extend the capabilities of their existing HP network infrastructure to include ISDN connectivity, facilitating communication services or bridging to ISDN-based systems.
