Welltech SPCI2S Intel NetStructure SS7 Boards User Manual
Page 51
SS7 Programmer’s Manual for SPCI2, SPCI4 and CPM8 Issue 2
Page 51
frame_format
The frame format taken from the following table:
frame_format Description
1
E1 double frame (E1 only)
2
E1 CRC4 multiframe (E1 only)
4
D3/D4 (Yellow alarm = bit 2 in each channel) (T1 only)
7
ESF (Yellow alarm in data link channel) (T1 only)
crc_mode
The CRC mode taken from the following table:
crc_mode Description
1
CRC generation disabled
2
CRC4 enabled (frame_format must be set to 2)
3
CRC4 compatibility mode (frame_format must be set to 2)
4
CRC6 enabled (frame_format must be set to 7)
build_out
Currently configurable line build out is not supported by the board so the
following fixed values must be used.
build_out Description
0
Setting for E1 devices
1
Setting for T1 devices
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 zero.
[E1 default = 0x9b].
nfaw
The 8 bit value to be used for any E1 non-frame alignment word bit positions
that are not modified by other options. Normally this parameter should be set to
0x9f for E1 operation and set to zero for T1.