# AG 2000-BRI board features

The AG 2000-BRI board is part of the Alliance Generation family of telephony boards. It provides up to four digital line interfaces with up to eight ports of call processing and programmable voice processing.

The following illustration shows the available AG 2000-BRI board types:

AG 2000-BRI board types

Refer to the NMS web site (www.nmscommunications.com) for a list of available AG 2000-BRI board configurations, for a list of countries where NMS has obtained approval for the AG 2000-BRI board, and for product updates.

An AG 2000-BRI board contains the following main features:

- DSP resources

Each board has two or four high-performance digital signal processors (DSPs) that provide resources for eight ports of call processing and programmable voice processing. Each DSP supports one or more tasks. These tasks include voice recording and playback, DTMF detection and generation, and call progress analysis. Fax is supported on an AG 2000-BRI board with two DSPs.

- PCI bus connectivity

Each AG 2000-BRI board is designed to reside in a single PCI bus slot. Each board contains a 5 volt PCI bus interface compliant with the PCI specification, version 2.1. The PCI interface is a 33 MHz, 32-bit target device.

- Trunk connectivity

Each board contains BRI network interfaces for digital ISDN trunk connectivity with the following characteristics:

- S0/T0 interfaces support

- TE and NT modes

- Point-to-point and point-to-multipoint wiring support:

- Short and extended passive bus (in-building wiring)

- Up to eight terminals

- H.100 bus connectivity

The AG 2000-BRI board fully supports the H.100 bus specification. The H.100 bus allows boards to share data and signaling information with other boards on the H.100 bus. For example, you can connect two or more AG 2000-BRI boards for applications that perform trunk-to-trunk switching. You can add additional DSP resources, analog station interfaces, or loop start line interfaces using other AG boards. You can also use H.100 compatible products from other manufacturers with the AG 2000-BRI board.

The H.100 interface supports the following stream configurations on the H.100 bus:

- Full mode: 32 streams at 8 MHz each that provide 128 timeslots each for a total of 4096 timeslots.

- Backward compatibility mode: 16 8MHz streams, 16 2MHz streams (total of 2560 timeslots). The H.100 interface operates with MVIP-90 boards on the same bus. In these configurations, use an H.100 board as the system bus master.

- Telephony bus switching

Switching for the AG 2000-BRI board is implemented with the HMIC (H.100/MVIP integrated circuit). The HMIC is a single chip that offers full support for the H.100 bus within the MVIP architecture providing access to all 4096 slots.

On the AG 2000-BRI board, switch connections are allowed for up to 128 full duplex connections between local devices and the H.100 bus. Non-blocking switch connections are allowed between local devices. On the AG 2000-BRI board, switching is controlled by the MVIP-95 model; the MVIP-90 model is not supported.

- The following illustration shows where various components are located on an AG 2000-BRI board:

AG 2000-BRI board