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/***************************************************************************
Name : T30.H Comment : Main include file for T30 driver. All common structire defns etc. Functions: (see Prototypes just below)
Revision Log Date Name Description -------- ----- ---------------------------------------------------------***************************************************************************/
#include "timeouts.h"
/**---------------------- #define of sizes of things ---------------------
Frames can be at most 2.55 secs (sent) or 3.45 secs (recvd) long, or 2.55 * 300/8 = 96 bytes and 132 bytes long respectively
For clumps of received frames, we collect them in a GlobalAlloced space for passing to teh WhatNext callback function. We arbitrarily decide to allow at most 10 frames and at most 500 bytes at a time. (500 bytes = 500/(300/8) = 13.33 secs, so that should be quite enough)
---------------------- #define of sizes of things ---------------------**/
//#define ECM_TOTALFRAMESIZE (ECM_FRAME_SIZE + 4)
// Used for calling ModemSync(). The shorter one during calls,
// the longer one only on hangup and stuff
#define RESYNC_TIMEOUT1 1100
#define RESYNC_TIMEOUT2 500
// This are way too long. We have built-in delays anyway, so don't need
// the full time, and the recvrs have to recv from other fax machines
// so take it easy here
// #define PHASEC_PAUSE 100 // how long to pause before TCF/phase C
#define RECV_PHASEC_PAUSE 55 // used by RecvSil() before TCF/phase C
#define SEND_PHASEC_PAUSE 75 // used by SendSil() before TCF/phase C
// ModemRecvSilence() always waits a bit longer than the amount requested
// so to get it right we ask for the minimum required, i.e. 55ms
// However ModemSendSilence() is pretty accurate, so ask for teh exact
// nominal amount, i.e. 75ms
// How long to try for AT+FRM before timing out and trying
// for an AT+FRH instead. Must be 100% *sure* to get page if there
// is one, because there's no recovery after missing that. But must
// also be sure to get the 2nd CTC if there is one.
// Other critical situations:- MCF is missed, and sender resends MPS
// We miss this because we're in FRM, but we mustn't miss the 3rd one!
// Ditto with DCS-TCF-missedCFR. Can't get 2nd, but we'll get 3rd
// #define PHASEC_TIMEOUT 2800L // 2.8s
// increase this to 3200. Limit is 3550, but we need 200ms or so to restart
// receiving FRH=3
#ifdef MDDI
// if we are on an IFAX we can DEPEND on teh RECV_WRONGMODE code
// being correctly implemented. In fact we need to because to handle
// satelite delays, echos etc this timeout need to be LONG (equal
// to T2 in fact), so we cant wait to timeout before recving V21
// so the only way we're going to handle eth above situations is
// if we always get the +FCERROR/WRONGMODE resp at the right time
# define PHASEC_TIMEOUT 6000L // 6secs
#else
# define PHASEC_TIMEOUT 3300L // 3.3s
#endif
// How long to try for AT+FRM in TCF before timing out and trying
// +FRH. Mustn't miss TCF, but if we do, must catch next DCS
// increase this to 3200. Limit is 3550, but we need 200ms or so to restart
// receiving FRH=3
#define TCF_TIMEOUT 3300L // 3.3s
// don't need this one. Besides don't want to send it at startup when
// we're already transmitting HDLC. This can cause problems, if we already
// have a delay (example after TCF, sending CFR. Delay is now 115, it will
// become 180 or so).
// #define LOWSPEED_PAUSE 60 // how long to pause before HDLC
// reduce this too
#define RECV_LOWSPEED_PAUSE 55 // used by RecvSil() before HDLC
#define SEND_LOWSPEED_PAUSE 75 // used by SendSil() before HDLC
// ModemRecvSilence() always waits a bit longer than the amount requested
// so to get it right we ask for the minimum required, i.e. 55ms
// However ModemSendSilence() is pretty accurate, so ask for teh exact
// nominal amount, i.e. 75ms
// How long of silence to look for before sending V.21. (IFAX/MDDI only)
// Use LOWSPEED_PAUSE defined above.
// How long of silence to look for before sending PhaseC. (IFAX/MDDI only)
// use 40ms or more (want to be pretty sure we got silenec)
// ---> we use PHASEC_PAUSE which is OK
// How long to look for silence before sending high-speed.
// If this fails we go ahead and send anyway, so we don't want
// it too long. But we want to try pretty hard to get silence,
// because otherwise the other side will miss my training.
// 3secs is about how long a NSF-DIS takes. If we hit one
// we want to wait until it's done, not timeout??
#define LONG_RECVSILENCE_TIMEOUT 3000 // how long to wait for silence before send HDLC or PIX
// when sending DIS, DCS or DTC we may collide with DCS, DIS or DIS coming
// from the other side. This can be really long (preamble+2NSFs+CSI+DIS > 5secs)
// so wait for upto 6 secs (preamble + 150+ bytes)
#define REALLY_LONG_RECVSILENCE_TIMEOUT 6000 // how long to wait for silence before send DIS/DCS/DTC
// Used before TCF
#define SHORT_SENDSILENCE_TIMEOUT 100 // how long to wait for send-silence before TCF
#define ECHOPROTECT(ifr, mode) { pTG->EchoProtect.ifrLastSent=ifr; pTG->EchoProtect.modePrevRecv=mode; pTG->EchoProtect.fGotWrongMode=0; }
/*****
// INI file settings related stuff
typedef struct{ USHORT uIgnoreDIS; // non-zero==number of DIS to be ignored
USHORT uRecvT1Timer; // 0==default otherwise==number of seconds
USHORT uSendT1Timer; // 0==default otherwise==number of seconds
// BOOL fTotalErrsOnly; // 0==burst 1==total
// BOOL fNo999; // can't dial 999
// USHORT uCSICompare; // 0==no compare 1==just existence of CSI
// 2==4 digits 3==8 digits
}ET30INISETTINGS;*****/
#define ECM_NEWPAGE 2
#define ECM_NEWBLOCK 1
#define ECM_RETRANSMIT 0
extern USHORT TCFLen[];
#define BadAction(pTG, a) (ERRMSG((SZMOD "<<ERROR>> BadAction %d\r\n", a)), ICommFailureCode(pTG, T30FAIL_BUG0), BG_CHK(FALSE), actionERROR)
#define GetResponse(pTG, ifr) GetCmdResp(pTG, FALSE, ifr)
#define GetCommand(pTG, ifr) GetCmdResp(pTG, TRUE, ifr)
#define GetSendBuf(pTG, lplpbf, slOffset) ICommGetSendBuf(pTG, lplpbf, slOffset)
#define PutRecvBuf(pTG, lpbf, slOffset) ICommPutRecvBuf(pTG, lpbf, slOffset)
/****************** begin prototypes from ecm.c *****************/ET30ACTION ECMPhaseC(PThrdGlbl pTG, BOOL fReTx);// ET30ACTION ECMPhaseCRetrans(void);
ET30ACTION ECMPhaseD(PThrdGlbl pTG);ET30ACTION ECMSendEOR_EOP(PThrdGlbl pTG);ET30ACTION ECMRecvPhaseD(PThrdGlbl pTG);ET30ACTION ECMRecvPhaseC(PThrdGlbl pTG, BOOL);/***************** end of prototypes from ecm.c *****************/
/****************** begin prototypes from hdlc.c *****************/USHORT ModemRecvBuf(PThrdGlbl pTG, HMODEM hModem, BOOL fECM, LPBUFFER far* lplpbf, ULONG ulTimeout);/***************** end of prototypes from hdlc.c *****************/
/****************** begin prototypes from t30.c *****************/IFR GetCmdResp(PThrdGlbl pTG, BOOL fCommand, USHORT ifrResp);/***************** end of prototypes from t30.c *****************/
/****************** begin prototypes from t30main.c *****************/USHORT T30MainBody(PThrdGlbl pTG, BOOL fCaller, ET30ACTION actionInitial, HLINE hLine, HMODEM hModem);// BOOL GetDev(USHORT uPort);
// BOOL FreeDev(void);
/***************** end of prototypes from t30main.c *****************/
#define GetDevAndDial(pTG, port, phone) (GetDev(pTG, port) && Dial(pTG, phone))
#define GetDevAndAnswer(pTG, port) (GetDev(pTG, port) && Answer(pTG))
#ifdef SWECM
# pragma message ("--------- WARNING: Software ECM ENABLED ----------")
USHORT ModemECMRecvMode(PThrdGlbl pTG, HMODEM h, USHORT uMod, ULONG ulTimeout); BOOL SWECMSendSetup(PThrdGlbl pTG, BOOL fOn); BOOL SWECMRecvSetup(PThrdGlbl pTG, BOOL fOn); USHORT SWECMRecvFrame(PThrdGlbl pTG, HMODEM hModem, LPBYTE lpb, USHORT cbMax, ULONG ulTimeout, USHORT far* lpcbRecv); void D_HexPrint(LPB b1, UWORD incnt);/***************** end of prototypes from swecm.c *****************/
#else
# define ModemECMRecvMode(pTG, h, mod, t) ModemRecvMode(pTG, h, mod, TRUE, t, ifrECMPIX)
#endif
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