# CX 2000 switch model

This topic describes:

- The specific use of each stream, as shown for H.100 streams and local streams

- An illustration of the CX 2000 switch model

- Lucent T8100A switch blocking

## H.100 streams

H.100 streams |
--- | ---
H.100 Bus | Streams 0..31, timeslots 0..127 (Streams clocked at 8 MHz)

## Local streams

Local streams |
--- | ---
Station voice information | Stations 0 - 47: Streams 0 and 1, timeslots 0..47 for 48 ports Stations 0 - 31: Streams 0 and 1, timeslots 0..31 for 32 ports
Station signaling information | Stations 0 - 47: Streams 2 and 3, timeslots 0..47 for 48 ports Stations 0 - 31: Streams 2 and 3, timeslots 0..31 for 32 ports
DSP voice information | Streams 4 and 5, timeslots 0..47 for 48 ports Streams 4 and 5, timeslots 0..31 for 32 ports
DSP signaling information | Streams 6 and 7, timeslots 0..47 for 48 ports Streams 6 and 7, timeslots 0..31 for 32 ports

## Switch model

The following illustration shows the CX 2000 switch model:

## Lucent T8100A switch blocking

Switching on the CX 2000 board is implemented by the Lucent T8100A chip (HMIC). The Lucent T8100A chip can perform local bus to local bus switching in full non-blocking fashion.

The number of H.100 connections is limited to a maximum of 128 full duplex or 256 simplex (or half duplex) connections, in any combination, from either the:

- H.100 bus to the local bus

- H.100 bus to H.100 bus