FaxBack NET SatisFAXtion 8.7 (Including R3) - Manual User Manual
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4 – Appendices
NET SatisFAXtion 8.7 Manual
220
FILE
FAX_DEVICE
SERIAL_CAPTURE
TCP
dial_prefix [string(20)]: Data to be prepended to dial strings, typically 9, if 
present.
dial_wait [dword 0–255]: Seconds the driver to wait in the "ringing" state be-
fore hanging up. Default: 
45
.
end_port_number [dword 1–65535]: Last UDP port to allocate for RTP and 
T.38. Default: 
49151
.
firewall_name [string]: The base name for any Windows Firewall exceptions 
created by the IP_FAX driver. Default: 
IP_FAX
.
io_buffer_size [dword 0–65535]: This is the size of the image buffer. The 
necessary buffer size depends on host CPU speed and load as well as connect 
speed. This buffer directly adds to driver page locked memory use so should be 
as small as possible. However, too small a buffer will cause faxes to fail. De-
fault: 
20480
.
local_ip_address [string]: Public IP address of NAT, for use with STUN. 
Specifically, this will override the domain part of the Contact: header. Only an 
IP address is valid here, not a name.
phone_number [string]: Specifies a value that the IP fax driver sets in the 
From:
header of SIP messages that it creates, identifying the IP fax port. A
VoIP router can, if so configured, pass along this value as the caller ID (ANI) 
for the outbound fax call.
post_page_holdup [boolean]: For non-ECM fax receive, this causes the driver 
to wait until the app reading image data acknowledges quality of the page. This 
allows the driver to respond with MCF, RTP or RTN. Disabling this will allow 
for the drivers receive page buffering for latent apps. See also 
ICANFAX\rtp_percent
,
ICANFAX\rtn_percent
. Default:
true
.
rings_before_answer [dword 0–255]: Number of rings before modem ac-
cepts call. Default: 
1
.
sdp_session_name [string]: Name to use for the
s=
session name attribute in
the SDP. Default:
SIP Fax Call
.
show_console_scroll_back_buffer_size [dword 0–4294967295]: When 
the debug output is 
CONSOLE
, this is how big of a buffer to be used for scroll-
back. Default:
282144
.
show_ring0_buffer_size [dword 0–4294967295]: How big of buffer for the 
page locked debug buffer that ring0 code writes to and ring3 code extracts 
from (on a thread) to the debugging output. This should be larger for when us-
ing serial capture mode since so much more data is written for debug. It should 
probably be only about 1K for when using T.30 debug since the frequency and 
amount of T.30 debug is small enough that the ring3 code can easily keep up 
writing to the show output. Default: 
65536
.
