From the ATS$ command:
S54 Bit Mapped 1 = Disable 2400 symbol rate 2 = Disable 2743 symbol rate 4 = Disable 2800 symbol rate 8 = Disable 3000 symbol rate 16 = Disable 3200 symbol rate 32 = Disable 3429 symbol rate 64 = Disable V.8 Call Indicate 128 = Disable V.8 Mode so s54=64 should enable all symbol rates. I don't think there's a *direct* relationship between the S54 register and anything in the v.34 spec. But I would be *very* interested to see if there's a way to get anything this low-level out of *any* modem... (I'm still hoping I could use something like that to ID the brand of modem at the remote end -- that would be *great* for troubleshooting.) So how did you get the INFO0 bits directly? Please share. :) How new is your copy of the v.34 spec? They charge money for copies of that nowadays. I have an older copy from before that time, but it's out of date and doesn't include the 31.2K/33.6K extensions. Mike Andrews (MA12) * mandrews@dcr.net * http://www.bit0.com/ VP, sysadmin, & network guy, Digital Crescent Inc, Frankfort KY Internet services for Frankfort, Lawrenceburg, Owenton, Shelbyville "Don't sweat the petty things, and don't pet the sweaty things." On Sun, 12 Mar 2000, Andrey Zimin wrote:
Here INFO0 sequince I recive from HperDSP (from 12bit) -21FD.
As defned in ITU-V34: === 10.1.2.3.3 INFO0 information bits Table 14 defines the bits in the INFO0 sequences. Bit 0 is transmitted first.
TABLE 14/V.34 Definition of bits in INFO0 sequences
INFO0 bits LSB:MSB Definition 0:3 Fill bits: 1111 4:11 Frame sync: 01110010, where the left-most bit is first in time 12 Set to 1 indicates symbol rate 2743 is supported 13 Set to 1 indicates symbol rate 2800 is supported 14 Set to 1 indicates symbol rate 3429 is supported 15 Set to 1 indicates the ability to transmit at the low carrier frequency with a symbol rate of 3000 16 Set to 1 indicates the ability to transmit at the high carrier frequency with a symbol rate of 3000 17 Set to 1 indicates the ability to transmit at the low carrier frequency with a symbol rate of 3200 18 Set to 1 indicates the ability to transmit at the high carrier frequency with a symbol rate of 3200 19 Set to 0 indicates that transmission with a symbol rate of 3429 is disallowed 20 Set to 1 indicates the ability to reduce transmit power to a value lower than the nominal setting 21:23 Maximum allowed difference in symbol rates in the transmit and receive directions. With the symbol rates labelled in increasing order, where 0 represents 2400 and 5 represents 3429, an integer between 0 and 5 indicates the difference allowed in number of symbol rate steps 24 Set to 1 in an INFO0 sequence transmitted from a CME modem 25 Set to 1 indicates the ability to support up to 1664 point signal constellations 26:27 Transmit clock source: 0 = internal, 1 = synchronized to receive timing, 2 = external, 3 = reserved for ITU 28 Set to 1 to acknowledge correct reception of an INFO0 frame during error recovery 29:44 CRC 45:48 Fill bits: 1111 NOTES 1 - Bits 12 through 14 are used to indicate the modem's capabilities and/or configuration. The values of bits 15 through 20 depend upon regulatory requirements and apply only to the modem's transmitter. 2 - Bit 24 may be used in conjunction with the GSTN access category octet defined in Recommendation V.8 to determine the optimum parameters for the signal convertors and error-control functions in the call and answer modem and any intervening CME. ======
Anybody know why? S54=64 on HiperDSP ===== mdm1> ati4
Modem Current Settings
E0 Q1 V0 X0 &A1 &G0 &K1 &M4 &N0 &U0 %B7 *U1=1 *U2=0 *U3=1 *V2=0 *X0=2048 *X1=2
S00=001 S01=000 S02=043 S03=013 S04=010 S05=008 S06=002 S07=060 S08=002 S09=006 S10=007 S11=070 S12=050 S13=000 S14=001 S15=000 S16=000 S17=000 S18=000 S19=000 S20=000 S21=000 S22=000 S23=000 S24=000 S25=000 S26=000 S27=000 S28=008 S29=020 S30=000 S31=000 S32=000 S33=000 S34=000 S35=000 S36=000 S37=000 S38=000 S39=012 S40=000 S41=000 S42=000 S43=000 S44=000 S45=000 S46=000 S47=000 S48=000 S49=016 S50=100 S51=064 S52=005 S53=000 S54=064 S55=000 S56=000 S57=000 S58=000 S59=000 S60=000 S61=000 S62=000 S63=000 S64=000 S65=000 S66=000 S67=001 S68=000 S69=000 S70=000 S71=000 S72=000 S73=001 S74=000 S75=000 S76=000 S77=000 S78=000 S79=000 S80=000 S81=000 S82=012
Last Dialed #: ======
Good luck ! ====================== Andrey Zimin | AVZ7-RIPE MTU-Intel ISP Moscow, Russia ======================
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