I had a problem sending faxes to some Brother fax machines. The Brother fax machines had a built in facility for sharing the line with a telephone attached to the fax machine. Here are the ini files from the gateway where out outgoing fax modems are attached and the ini for the gateway to the outside.
;**************
;** Ini File **
;**************
;Board: MP-114 FXS
;Serial Number: 1101699
;Slot Number: 1
;Software Version: 5.00A.045.004
;DSP Software Version: 204IM => 209.20
;Board IP Address: 10.4.32.10
;Board Subnet Mask: 255.255.254.0
;Board Default Gateway: 10.4.33.253
;Ram size: 32M Flash size: 8M
;Num DSPs: 1 Num DSP channels: 4
;Profile: NONE
;-----------------------------------------
EnableSyslog = 1
VXMLFIleName = '
NTPServerIP = 10.4.33.4
NTPServerUTCOffset = -21600
NTPUpdateInterval = 3600
PCMLawSelect = 3
EnableLANWatchdog = 1
LocalOAMIPAddress = 10.4.32.10
RoutingTableHopsCountColumn = 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
FXSLoopCharacteristicsFilename = 'MP11x-02-1-FXS_16KHZ.dat'
FlashHookPeriod = 800
AdminStateLockControl = 0
ControlDiffServ = 46
IPDiffServ = 46
DIGITMAPPING = 'xx|70S|9x.T|0'
EP_Num_0 = 0
EP_Num_1 = 1
EP_Num_2 = 0
EP_Num_3 = 0
EP_Num_4 = 0
IdlePCMPattern = 255
EnableSilenceCompression = 1
BrokenConnectionEventTimeout = 3
CallerIDTransportType = 1
FaxRelayRedundancyDepth = 2
FaxModemBypassCoderType = 1
BasicRTPPacketInterval = 3
CNGDetectorMode = 2
EnableStandardSIDPayloadType = 1
FarEndDisconnectSilenceMethod = 2
FarEndDisconnectSilencePeriod = 120
CallProgressTonesFilename = 'CALL_PROGRESS_FXS_NO_HOLD_US.dat'
UseRProductName = 'V7111 ANALOG FXS'
LogoFileName = '3Com_pbsm.gif'
LogoWidth = '96'
WebLogoText = '3Com'
UseProductName = 1
ENABLECALLERID = 1
MAXDIGITS = 16
ISSPECIALDIGITS = 1
REGISTRATIONTIME = 3600
USERADLOG = 1
DISCONNECTONBUSYTONE = 0
ISPROXYUSED = 1
ISREGISTERNEEDED = 1
ROUTEMODEIP2TEL = 1
ENABLECURRENTDISCONNECT = 0
ENABLEREVERSALPOLARITY = 0
SECURECALLSFROMIP = 0
ENABLEBUSYOUT = 0
RADDEBLEVEL = 2
CDRREPORTLEVEL = 1
MAXACTIVECALLS = 8
REGRETTIME = 0
RADLOGOUTPUT = 1
GWDEBUGLEVEL = 6
ENABLEPROXYKEEPALIVE = 1
ENABLEEARLYMEDIA = 1
PROXYNAME = '10.4.32.22'
SIPGATEWAYNAME = '10.4.32.10'
USERNAME = 'VCX-V7111'
PASSWORD = '1234'
ENABLESILENCEDISCONNECT = 0
DEFAULTRELEASECAUSE = 34
PROGRESSINDICATOR2IP = 0
ISFALLBACKUSED = 1
ALWAYSSENDTOPROXY = 1
ISPROXYHOTSWAP = 1
PROXYREDUNDANCYMODE = 1
FILTERCALLS2IP = 0
ALTROUTINGTEL2IPENABLE = 1
ALTROUTINGTEL2IPMODE = 3
GWAPPDELAYTIME = 5
ENABLEDIDWINK = 0
DISCONNECTONBROKENCONNECTION = 0
ENABLEDIGITDELIVERY = 0
SENDINVITETOPROXY = 1
CDRSYSLOGSERVERIP = 0.0.0.0
MWISERVERIP = '0.0.0.0'
ASSERTEDIDMODE = 1
USEGATEWAYNAMEFOROPTIONS = 1
ADDTON2RPI = 0
ENABLEDIGITDELIVERY2IP = 0
ISFAXUSED = 3
GWREGISTRATIONNAME = 'VCX-V7111'
MAXCALLDURATION = 0
CUTTHROUGH = 0
HOTLINETONEDURATION = 10
ENABLEUSERINFOUSAGE = 0
DELAYBEFOREDIDWINK = 0
TELCONNECTCODE = '
FXSOOSBEHAVIOR = 1
SetDefaultOnIniFileProcess = 0
CODERNAME = g711Ulaw64k,20,0,0,0
CODERNAME = g729,20,0,18,0
CODERNAME = t38fax,$$,$$,0,$$
TRUNKGROUP = 1-1,282,0
TRUNKGROUP = 2-2,285,0
TRUNKGROUP = 3-3,376,0
TRUNKGROUP = 4-4,377,0
PROXYIP = 10.4.32.22
PROXYIP = 10.4.64.22
AUTHENTICATION_0 = 282,12345
AUTHENTICATION_1 = 285,12345
AUTHENTICATION_2 = 376,12345
AUTHENTICATION_3 = 377,12345
TXDTMFOPTION = 4
;TelProfile: ProfileName, Preference, CodersGroupID, IsFaxUsed, DJBufMinDelay, JBufOptFactor, IPDiffServ, SigIPDiffServ, DtmfVolume, InputGain, VoiceVolume, EnableReversePolarity, EnableCurrentDisconnect, EnableDigitDelivery, ECE, MWIAnalog, MWIDisplay, FlashHookPeriod, EnableEarlyMedia, ProgressIndicator2IP
TELPROFILE_1 = Default Tel Profile,1,0,1,10,10,46,40,-11,0,0,1,1,1,1,0,0,400,1,8
TELPROFILE_2 = Default Tel Profile,1,0,1,70,7,46,46,-11,0,0,0,1,0,1,0,0,400,1,0
;IpProfile: ProfileName, Preference, CodersGroupID, IsFaxUsed, DJBufMinDelay, JBufOptFactor, IPDiffServ, SigIPDiffServ, SCE, RTPRedundancyDepth, RemoteBaseUDPPort, CNGmode, VxxTransportType, NSEMode, IsDTMFUsed, PlayRBTone2IP, EnableEarlyMedia, ProgressIndicator2IP
IPPROFILE_1 = Default Ip Profile,1,0,1,10,10,46,40,0,0,0,1,2,0,0,0,1,8
ENABLECALLERID_0 = 1
ENABLECALLERID_1 = 1
ENABLECALLERID_2 = 1
ENABLECALLERID_3 = 1
ENABLECALLERID_6 = 1
ENABLECALLERID_7 = 1
ENABLECALLERID_4 = 1
ENABLECALLERID_5 = 1
;
; *** TABLE DspTemplates ***
; This table contains hidden elements and will not be exposed.
; This table exists on board and will be saved during restarts
;
;**************
;** Ini File **
;**************
;Board: Mediant 2000
;Serial Number: 1104705
;Slot Number: 1
;Software Version: 5.00A.045.004
;DSP Software Version: 624AE3 => 209.20
;Board IP Address: 10.4.32.12
;Board Subnet Mask: 255.255.254.0
;Board Default Gateway: 10.4.33.253
;Ram size: 128M Flash size: 8M
;Num DSPs: 12 Num DSP channels: 62
;Profile: NONE
;Key features:;Max SW Ver: 9.99;Board Type: Mediant 2000;Coders: G729 GSM-FR G727 ;Channel Type: RTP PCI DspCh=62;E1Trunks=2;T1Trunks=2;DSP Voice features: EC128mSec IpmDetector ;Control Protocols: SIP ;PSTN Protocols: ISDN CAS ;Security: IPSEC MediaEncryption StrongEncryption EncryptControlProtocol ;Default features:;Coders: G711 G726;
;-----------------------------------------
SyslogServerIP = 10.4.33.65
NTPServerIP = 10.4.33.4
NTPServerUTCOffset = -21600
NTPUpdateInterval = 3600
PCMLawSelect = 3
TDMBusClockSource = 4
EnableLANWatchdog = 1
EnableIPAddrTranslation = 0
LocalOAMIPAddress = 10.4.32.12
LocalOAMSubnetMask = 255.255.254.0
LocalOAMDefaultGW = 10.4.33.253
RoutingTableHopsCountColumn = 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
AdminStateLockControl = 0
ControlDiffServ = 46
IPDiffServ = 46
EP_Num_0 = 0
EP_Num_1 = 1
EP_Num_2 = 0
EP_Num_3 = 0
EP_Num_4 = 0
ProtocolType = 12
FramingMethod = D
CASTablesNum = 1
CASFileName_0 = 'E_M_WinkTable.dat'
CASFileName_1 = '
CASFileName_2 = '
CASFileName_3 = '
CASFileName_4 = '
CASFileName_5 = '
CASFileName_6 = '
CASFileName_7 = '
PSTNReserved3 = 8
DPNSSBehavior = 12
IdlePCMPattern = 255
BrokenConnectionEventTimeout = 3
FaxTransportMode = 2
FaxRelayRedundancyDepth = 2
FaxModemBypassCoderType = 1
CNGDetectorMode = 2
FarEndDisconnectSilenceMethod = 0
CallProgressTonesFilename = 'CALL_PROGRESS_M2K_USA.dat'
UseRProductName = 'V7122 Digital Gateway'
LogoFileName = '3Com_pbsm.gif'
LogoWidth = '96'
WebLogoText = '3Com'
UseProductName = 1
REGISTRATIONTIME = 3600
ISPROXYUSED = 1
ISREGISTERNEEDED = 1
RADDEBLEVEL = 2
CDRREPORTLEVEL = 1
RADLOGOUTPUT = 1
GWDEBUGLEVEL = 5
ENABLEPROXYKEEPALIVE = 1
ENABLEEARLYMEDIA = 1
PROXYNAME = '10.4.32.22'
SIPGATEWAYNAME = '10.4.32.12'
USERNAME = 'VCX-V7122'
DEFAULTRELEASECAUSE = 34
PROGRESSINDICATOR2IP = 8
ISFALLBACKUSED = 1
ISPROXYHOTSWAP = 1
PROXYREDUNDANCYMODE = 1
ALTROUTINGTEL2IPMODE = 0
DISCONNECTONBROKENCONNECTION = 0
SENDINVITETOPROXY = 1
ASSERTEDIDMODE = 1
USEGATEWAYNAMEFOROPTIONS = 1
ISFAXUSED = 3
GWREGISTRATIONNAME = 'VCX-V7122'
ENABLEUUITEL2IP = 1
ENABLEUUIIP2TEL = 1
PLAYBUSYTONE2ISDN = 1
PROGRESSINDICATOR2ISDN_0 = -1
PROGRESSINDICATOR2ISDN_1 = 8
PROGRESSINDICATOR2ISDN_2 = -1
PROGRESSINDICATOR2ISDN_3 = -1
PROGRESSINDICATOR2ISDN_4 = -1
PROGRESSINDICATOR2ISDN_5 = -1
PROGRESSINDICATOR2ISDN_6 = -1
PROGRESSINDICATOR2ISDN_7 = -1
LOCALISDNRBSOURCE_0 = 1
LOCALISDNRBSOURCE_1 = 1
LOCALISDNRBSOURCE_2 = 0
LOCALISDNRBSOURCE_3 = 0
LOCALISDNRBSOURCE_4 = 0
LOCALISDNRBSOURCE_5 = 0
LOCALISDNRBSOURCE_6 = 0
LOCALISDNRBSOURCE_7 = 0
PLAYRBTONE2TRUNK_0 = 1
PLAYRBTONE2TRUNK_1 = 1
PLAYRBTONE2TRUNK_2 = -1
PLAYRBTONE2TRUNK_3 = -1
PLAYRBTONE2TRUNK_4 = -1
PLAYRBTONE2TRUNK_5 = -1
PLAYRBTONE2TRUNK_6 = -1
PLAYRBTONE2TRUNK_7 = -1
SetDefaultOnIniFileProcess = 0
CODERNAME = g729,20,0,18,0
CODERNAME = g711Ulaw64k,20,0,0,0
CODERNAME = t38fax,$$,$$,0,$$
CODERNAME_1 = g711Ulaw64k,20,0,$$,0
PREFIX = *,*,*,0,255
SOURCENUMBERMAPIP2TEL = *,0,$$,$$,1,2,*,0,*
SOURCENUMBERMAPTEL2IP = 205,3,9,$$,$$,$$,*,0,*
SOURCENUMBERMAPTEL2IP = *,0,91,$$,$$,$$,*,0,*
NUMBERMAPIP2TEL = 911,0,$$,$$,$$,$$,*,$$,*
NUMBERMAPIP2TEL = 9*,1,$$,$$,1,2,*,$$,*
NUMBERMAPTEL2IP = 265,0,$$,3,$$,$$,*,$$,*
PSTNPREFIX = 911,2,*,*,0
PSTNPREFIX = 9911,2,*,*,0
PSTNPREFIX = 91800*,2,*,*,0
PSTNPREFIX = 91888*,2,*,*,0
PSTNPREFIX = 91877*,2,*,*,0
PSTNPREFIX = 91866*,2,*,*,0
PSTNPREFIX = 91855*,2,*,*,0
PSTNPREFIX = 91*,1,*,*,0
PSTNPREFIX = 901*,1,*,*,0
PSTNPREFIX = 9*,2,*,*,0
TRUNKGROUP_1 = 0-0/1-23,Unknown-00,0
TRUNKGROUP_2 = 1-1/1-23,Unknown-00,0
PROXYIP = 10.4.32.22
PROXYIP = 10.4.64.22
TRUNKGROUPSETTINGS = 1,2,255,$$
TRUNKGROUPSETTINGS = 2,4,255,$$
TXDTMFOPTION = 4
TXDTMFOPTION = 4
TXDTMFOPTION = 4
TXDTMFOPTION = 4
TXDTMFOPTION = 4
;TelProfile: ProfileName, Preference, CodersGroupID, IsFaxUsed, DJBufMinDelay, JBufOptFactor, IPDiffServ, SigIPDiffServ, DtmfVolume, InputGain, VoiceVolume, EnableReversePolarity, EnableCurrentDisconnect, EnableDigitDelivery, ECE, MWIAnalog, MWIDisplay, FlashHookPeriod, EnableEarlyMedia, ProgressIndicator2IP
TELPROFILE_1 = Default Tel Profile,1,0,1,10,10,46,40,-11,0,0,0,0,1,1,0,0,400,1,8
;IpProfile: ProfileName, Preference, CodersGroupID, IsFaxUsed, DJBufMinDelay, JBufOptFactor, IPDiffServ, SigIPDiffServ, SCE, RTPRedundancyDepth, RemoteBaseUDPPort, CNGmode, VxxTransportType, NSEMode, IsDTMFUsed, PlayRBTone2IP, EnableEarlyMedia, ProgressIndicator2IP
IPPROFILE_1 = Default Ip Profile,1,0,1,10,10,46,40,0,0,0,2,2,0,0,0,1,8
SNMPManagerIsUsed_0 = 1
SNMPManagerIsUsed_1 = 0
SNMPManagerIsUsed_2 = 0
SNMPManagerIsUsed_3 = 0
SNMPManagerIsUsed_4 = 0
;
; *** TABLE DspTemplates ***
; This table contains hidden elements and will not be exposed.
; This table exists on board and will be saved during restarts
;