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390 Voice API for Windows Operating Systems Library Reference — November 2003
dx_setparm( ) — set physical parameters of a channel or board device
For Springware boards, the supported board parameter defines are shown in Table 13.
Table 12. Voice Board Parameters (DM3)
Define Bytes
Read/
Write
Default Description
DXBD_CHNUM 1 R - Channel Number. Number of channels on the board
DXBD_HWTYPE 1 R - Hardware Type. On DM3 boards, TYP_D41
DXBD_SYSCFG 1 R - System Configuration. On DM3 boards, 1 is always returned
Table 13. Voice Board Parameters (Springware)
Define Bytes
Read/
Write
Default Description
DXBD_CHNUM 1 R - Channel Number. Number of channels on the board
DXBD_FLASHCHR 1 R/W & Flash character. Character that causes a hook flash when detected
DXBD_FLASHTM 2 R/W 50 Flash Time. Length of time onhook during flash (10 msec units)
DXBD_HWTYPE 1 R - Hardware Type - value can be:
• TYP_D40 – D/40 board
• TYP_D41 – D/21, D/41, D/xxxSC board
DXBD_MAXPDOFF 2 R/W 50 Maximum Pulse Digit Off. Maximum time loop current may be off
before the existing loop pulse digit is considered invalid and
reception is reinitialized (10 msec units)
DXBD_MAXSLOFF 2 R/W 25 Maximum Silence Off. Maximum time for silence being off, during
audio pulse detection (10 msec units)
DXBD_MINIPD 2 R/W 25 Minimum Loop Interpulse Detection. Minimum time between loop
pulse digits during loop pulse detection (10 msec units)
DXBD_MINISL 2 R/W 25 Minimum Interdigit Silence. Minimum time for silence on between
pulse digits for audio pulse detection (10 msec units)
DXBD_MINLCOFF 2 R/W 0 Minimum Loop Current Off. Minimum time before loop current drop
message is sent (10 msec units)
DXBD_MINOFFHKTM 2 R/W 250 Minimum offhook time (10 msec units)
DXBD_MINPDOFF 1 R/W 2 Minimum Pulse Detection Off. Minimum break interval for valid loop
pulse detection (10 msec units)
DXBD_MINPDON 1 R/W 2 Minimum Pulse Detection On. Minimum make interval for valid loop
pulse detection (10 msec units)
DXBD_MINSLOFF 1 R/W 2 Minimum Silence Off. Minimum time for silence to be off for valid
audio pulse detection (10 msec units)
DXBD_MINSLON 1 R/W 1 Minimum Silence On. Minimum time for silence to be on for valid
audio pulse detection (10 msec units)
DXBD_MINTIOFF 1 R/W 5 Minimum DTI Off. Minimum time required between rings-received
events (10 msec units)
DXBD_MINTION 1 R/W 5 Minimum DTI On. Minimum time required for rings received event
(10 msec units)