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DSI SS7HD Network Interface Boards Programmer's Manual Issue 11

crc_mode

The CRC mode. The following table shows the permitted values and their meanings.

Value

Description

CRC generation disabled

CRC4 enabled (frame_format must be set to 2)

NOTE: Out of CRC4-multiframe E-Bits are transmitted as ones.

CRC4 compatibility mode (frame_format must be set to 2)

CRC6 enabled (frame_format must be set to 7 or 8)

CRC4 G.706mode (frame_format must be set to 2)

NOTE: Out of CRC4-multiframe E-Bits are transmitted as zeroes.

build_out

The following table shows the permitted values and their meanings.

Value

Description

Setting for E1 devices

T1 default (T1 short haul 0 - 110 ft)

T1 short haul 0 - 110 ft

T1 short haul 110 - 220 ft

T1 short haul 220 - 330 ft

T1 short haul 330 - 440 ft

T1 short haul 440 - 550 ft

T1 short haul 550 - 660 ft

T1 long haul LB0 (-0dB)

T1 long haul LB0 (-7.5dB)

T1 long haul LB0 (-15dB)

T1 long haul LB0 (0dB TR62411)

faw

The 8-bit value to be used for any E1 frame alignment word bit positions that are not

modified by other options. This allows the spare bit designated For International Use to

be set by the user when CRC4 mode is disabled. Valid values are 0x9b or 0x1b. When

using T1 this parameter should be set to 0. For E1, the default value is 0x9b. When

using unstructured frame format, this parameter should be set to 0.

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Dialogic DSI SPCI Network Interface Boards Especificações Página 71