# AG 2000C board features

The AG 2000C board is part of the Alliance Generation family of telephony boards. It provides 8, 16, or 24 analog loop start interfaces with call control and switching in a single CompactPCI slot.

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

An AG 2000C board contains the following main features:

- DSP resources

Each board has four high-performance digital signal processors (DSPs). The following table provides information about the different AG 2000C models:

Model | Ports | Capabilities
--- | --- | ---
AG 2000C-8 | 8 | Eight universal ports (Call control, IVR, fax, and VoIP). Note: Conferencing can be substituted for fax or VoIP.
AG 2000C-16 | 16 | Call control, switching, IVR, and fax or conferencing
AG 2000C-24 | 24 | Call control and switching

IVR is defined as play or record and DTMF detection.

- CompactPCI bus connectivity

Each AG 2000C board is designed to reside in a single CompactPCI bus slot. Each board contains a 5 volt CompactPCI bus interface compliant with the CompactPCI Specification PICMG 2.0 R2.1. The CompactPCI interface is a 33 MHz, 32-bit target device.

- H.110 bus connectivity

The AG 2000C board fully supports the H.110 bus specification. The H.110 bus enables boards to share data and signaling information with other boards on the H.110 bus. For example, you can connect two or more AG 2000C 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.110 compatible products from other manufacturers with the AG 2000C board.

- Telephony bus switching

Switching for the AG 2000C board is implemented with the T8100A chip. The T8100A is a single chip that offers full support for the H.110 bus within the H.110 architecture providing access to all 4096 slots.

On the AG 2000C board, switch connections are allowed for up to 128 full duplex connections between local devices and the H.110 bus.

- Loop start line interface signaling modules

The AG 2000C board has two to six loop start line interface signaling modules which are circuits that connect a bidirectional transmission channel to separate receive and transmit channels. Each line interface signaling module has four ports. This allows you to monitor and control at least 8 channels of signaling information.

The loop start line interface signaling module replaces a telephone, modem, or fax machine at the end of a standard telephone line or PBX extension.

The loop start interface can also be a trunk interface to the telephone network. With loop start trunks, you may want to segregate incoming calls from outgoing calls to avoid collisions between the two.

Changing the interface model has no impact on applications that you have already written.

The loop start interface:

- Has very high tolerance to common mode power line interfaces.

- Detects loop current reversals and interruptions in the off-hook mode.

- Receives called party identification in some countries.

- Records calls in on-hook mode where permitted by regulations.

Do not change any of the settings on the line interface signaling modules or attempt to remove the modules. These settings are factory installed and tested.

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

AG 2000C board

The following illustration shows the rear I/O transition board:

Rear I/O transition board