# Interoperability with MVIP-90

The AG 2000 board is located in a PCI bus slot and connects to the H.100 telephony bus. MVIP-90 and H-MVIP boards connect to the MVIP-90 bus and are typically located in ISA bus slots.

The MVIP bus adapter connects the H.100 bus to the MVIP-90 bus located in the same computer chassis, as shown in the following illustration:

The MVIP bus adapter enables boards connected to the H.100 bus to access the MVIP-90 bus, and enables MVIP-90 boards to access the first 16 streams of the H.100 bus. When connecting H.100 boards to the adapter, the first 16 H.100 streams must be clocked at 2 MHz, where each stream has 32 timeslots. By default, the AG 2000 board is configured for MVIP-90 compatibility mode with the first 16 streams configured for 2 MHz.