# RAW mode switching

This topic contains the following RAW mode switching information:

- RAW mode switch model

- H.100 and local streams

- Voice information routing on T1 trunks

- Voice information routing on E1 trunks

- T1/E1 signaling information routing

- Default connections

## RAW mode switch model

The following illustration shows the CG 6565 switching model in RAW mode:

## H.100 and local streams

The following tables list the specific use of each stream in the CG 6565 RAW switching model:

### H.100 streams

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

### Local streams

Trunk voice information (T1 trunks) | Trunk 1: Streams 0 and 1 Trunk 2: Streams 4 and 5 Trunk 3: Streams 8 and 9 Trunk 4: Streams 12 and 13 Trunk 5: Streams 16 and 17 Trunk 6: Streams 20 and 21 Trunk 7: Streams 24 and 25 Trunk 8: Streams 28 and 29 | timeslots 0..23 timeslots 0..23 timeslots 0..23 timeslots 0..23 timeslots 0..23 timeslots 0..23 timeslots 0..23 timeslots 0..23
Trunk voice information (E1 trunks) | Trunk 1: Streams 0 and 1 Trunk 2: Streams 4 and 5 Trunk 3: Streams 8 and 9 Trunk 4: Streams 12 and 13 Trunk 5: Streams 16 and 17 Trunk 6: Streams 20 and 21 Trunk 7: Streams 24 and 25 Trunk 8: Streams 28 and 29 | timeslots 0..30 timeslots 0..30 timeslots 0..30 timeslots 0..30 timeslots 0..30 timeslots 0..30 timeslots 0..30 timeslots 0..30
DSP voice information (T1 and E1 trunks) | Streams 64 and 65, timeslots 0.. up to 1500

## Voice information routing on T1 trunks (RAW mode)

If NetworkInterface.T1E1[x].SignalingType is set to RAW, information is routed to accommodate a configuration where no signaling is present on the T1 trunk. Voice information is transmitted in all 24 channels.

Each voice channel on the T1 trunk is placed in a corresponding timeslot on the local bus in the following streams:

## Voice information routing on E1 trunks (RAW mode)

If NetworkInterface.T1E1[x].SignalingType is set to RAW, voice information is transmitted in 31 channels. Timeslot 0 on the E1 line carries framing data.

The following illustration shows how voice channel data is assigned to timeslots:

## T1/E1 signaling information routing (RAW mode)

No signaling information is transmitted in RAW mode. It is assumed that another E1 trunk is carrying a D channel containing signaling for all trunks. In this mode, the local trunk signaling streams have zero timeslots.

## Default connections (RAW mode)

If a board is configured for standalone operation (that is, Clocking.HBus.ClockMode = STANDALONE), the DSPs and trunks are connected as shown in the following table.

Note: The SwitchConnections keyword can override this setting.

The exact settings for CG 6565 boards configured as E1 depend upon the NetworkInterface.T1E1[x].SignalingType keyword setting.

The following table shows the default routing for CG 6565 boards in RAW mode:

Trunk type | Full duplex connection between trunk voice information and DSP resources...
--- | ---
T1 | Trunk 1: 0:0..23 => 65:0..23 Trunk 2: 4:0..23 => 65:24..47 Trunk 3: 8:0..23 => 65:48..71 Trunk 4: 12:0..23 => 65:72..95 Trunk 5: 16:0..23 => 65:96..119 Trunk 6: 20:0..23 => 65:120..143 Trunk 7: 24:0..23 => 65:144..167 Trunk 8: 28:0..23 => 65:168..191 | 64:0..23 => 1:0..23 64:24..47 => 5:0..23 64:48..71 => 9:0..23 64:72..95 => 13:0..23 64:96..119 => 17:0..23 64:120..143 => 21:0..23 64:144..167 => 25:0..23 64:168..191 => 29:0..23
E1 | Trunk 1: 0:0..30 => 65:0..30 Trunk 2: 4:0..30 => 65:31...61 Trunk 3: 8:0..30 => 65:62..92 Trunk 4: 12:0..30 => 65:93..123 Trunk 5: 16:0..30 => 65:124..154 Trunk 6: 20:0..30 => 65:155..185 Trunk 7: 24:0..30 => 65:186..216 Trunk 8: 28:0..30 => 65:217..247 | 64:0..30 => 1:0..30 64:31..61 => 5:0..30 64:62..92 => 9:0..30 64:93..123 => 13:0..30 64:124..154 => 17:0..30 64:155..185 => 21:0..30 64:186..216 => 25:0..30 64:217..247 => 29:0..30