
G729 – Outbound initial INVITE will specify G.729 as the only media. Cannot be used
withanyothersetting.
USE_DIVERSION_AS_DNIS – Uses the SIP “Diversion:” header as DID instead of the
requestURI.
USE_TO_AS_DNIS–UsestheSIP“To:”headerasDIDinsteadoftherequestURI.
T38_ORIGINATE_REINVITE – On an outbound call, initiate the reinvite to T.38 on the
fax server side rather than waiting for the media gateway. Note that this will alter the
errorcodesgeneratedwhencallingvoice(nonfax)numbers.
GATEWAY–Notused.
PROXY–Notused.
REGISTRAR–Notused.
sip_invite_delay_msecs [dword 0–30000]: This is the min time to delay between multiple
SIP INVITES. This setting serializes all dials and specifies the minimum time between dials
across all channels. In effect this limits the calls persecond to 1000 ÷ sip_invite_delay_msecs.
A value of 0 imposes no artificial rate limit and IP_Fax will send calls as fast as possible.
Default:100.
sip_retry_invite_count [dword 0–1000]: This is the max number of times to retry for a
whendoingthesip_retry_invite_error_numberslogic.Default:20.
sip_retry_invite_delay_msecs [dword 0–1000]: This is the time to wait between
sip_retry_invite_error_numbersretries.Default:500.
sip_retry_invite_error_numbers [string]: Some services return an error if they are busy
and if the INVITE is sent again within a short period, it should succeed. This is a list of the error
that and INVITE should be repeated for. This is a list of comma separated IP_FAX error numbers
(notSIPresponsecodes)
Format:commaseparatedlistofhexadecimalnumbers.Default:28675,28496.
start_port_number[dword1–65535]:FirstUDPporttoallocateforRTPandT.38.
Default:49152.
t38_fax_max_buffer [dword 0–65535]: Buffer size to specify in the a=T38FaxMaxBuffer
SDPattribute.Default:200.
t38_fax_max_datagram[dword0–65535]:Datagramsizetospecifyinthe
a=T38FaxMaxDatagramSDPattribute.Default:72.
t38_control_redundancy [dword 0–65535]: Levels of redundant data to include in each T.38
“lowspeed”controlpacket.Default:5.
t38_image_redundancy [dword 0–65535]: Levels of redundant data to include in each T.38
“highspeed”imagepacket.Default:2.
t38_qos_token_rate [dword 0–65535]: TokenRate of sending T.38 RSVP FlowSpec. Default:
9250.
t38_qos_peak_bandwidth [dword 0–65535]: PeakBandwidth of sending T.38 RSVP
ProprietaryFaxBack,Inc.2014 188
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