Dialogic DSI SPCI Network Interface Boards Especificaciones descargar pdf (Pagina 34)

4 Message Reference

liu_type

Description

Disabled (used to deactivate a LIU). In this mode the LIU does not produce

an output signal.

E1 120ohm balanced interface.

Note: This must be selected by the user to be appropriate for the actual hardware fitted otherwise

an error status is returned.

line_code

The line coding technique taken from the following table:

line_code

Description

HDB3 (E1 only).

AMI with no Zero Code Suppression.

AMI with Zero Code Suppression (The appropriate bit in the clear_mask

parameter may be set to disable Zero Code Suppression for individual

timeslots if required.) (T1 only).

B8ZS (T1 only).

frame_format

The frame format taken from the following table:

frame_format

Description

E1 double frame (E1 only).

E1 CRC4 multiframe (E1 only).

D3/D4 (Yellow alarm = bit 2 in each channel) (T1 only).

ESF (Yellow alarm in data link channel) (T1 only).

crc_mode

The CRC mode taken from the following table:

crc_mode

Description

CRC generation disabled.

CRC4 enabled (frame_format must be set to 2).

CRC4 compatibility mode (frame_format must be set to 2).

CRC6 enabled (frame_format must be set to 7).

build_out

Configurable line build out is not supported by the board, so the following fixed values

must be used.

build_out

Description

Setting for E1 devices.

Setting for T1 devices.

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 73 74

Sin comentarios

Dialogic DSI SPCI Network Interface Boards Especificaciones Pagina 34