Introduction • 1-1 •
The H.110 Basic Rate ISDN Board
1.0 Introduction
The Infinity Series H.110 Basic Rate Interface ISDN Board is designed to
provide thirty-two Basic Rate ISDN (Integrated Services Digital Network)
interfaces connected to the H.110 bus on a board with the CompactPCI
bus form factor. Each interface or port provides a D channel for call
control signaling and two 64 kbps. B channels for either speech or circuit
switched data. Each port can be independently configured as either a TE
(Terminal Equipment) or NT (Network Termination) interface. The board
provides complete support for the ISDN Layer 1 and Layer 2 protocols, as
well as optional support for the Layer 3 protocols as defined in Q.931. In
addition, the board is equipped with several DSP’s to provide tone
generation and detection.
The H.110 bus was devised by the Enterprise Computer Telephony Forum
(ECTF) to provide a single telecom bus for the entire industry. It is
intended for add-in boards using the CompactPCI form factor. A variety
of boards are available from a number of different vendors. The H.110
specifications also provides for hot swap capabilities for use in high
availability applications.
The board is equipped with a processor that can be used to control the
lower level functions of the board. The host PC controls the board using
messages passed through dual-ported RAM. The board shares a common
message passing and control scheme with other Infinity Series H.110
boards.
1.1 Features and Capabilities
This section presents an overview of the features and capabilities of the
Infinity Series H.110 Basic Rate Interface ISDN Board.
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