RE: (usr-tc) ****SOLVED***** Websites failing on TCHub vs Ascend... Where to start?
May be it has something to do with the fact that 1518 is the max MTU permited by ethernet and many sites might have it as the default MTU. Sonny
From: "Robb Bryn" <rbryn@cape-fear.net> Reply-To: usr-tc@lists.xmission.com To: <usr-tc@lists.xmission.com> Subject: RE: (usr-tc) ****SOLVED***** Websites failing on TCHub vs Ascend... Where to start? Date: Fri, 10 Mar 2000 16:59:52 -0500
I started at 1514 per Source Technology's recommendation and found that 1514 fixed "most" of the problems, began incrementing by 4 until it worked on all sites, ended at 1518.
Thanks Robb Bryn
-----Original Message----- From: owner-usr-tc@lists.xmission.com [mailto:owner-usr-tc@lists.xmission.com]On Behalf Of Randy McMillan Sent: Friday, March 10, 2000 5:12 PM To: usr-tc@lists.xmission.com Subject: Re: (usr-tc) ****SOLVED***** Websites failing on TCHub vs Ascend... Where to start?
How did you decide on 1518 for the MTU size?
Randy McMillan PacInfo
----- Original Message ----- From: Robb Bryn <rbryn@cape-fear.net> To: <usr-tc@lists.xmission.com> Sent: Friday, March 10, 2000 11:12 AM Subject: (usr-tc) ****SOLVED***** Websites failing on TCHub vs Ascend... Where to start?
Problem Solved... As everyone suspected - it was an MTU problem. More specifically a problem in the MTU size. Setting the MTU size to 1500 via Radius did NOT fix the problem. After a few enlightening words from the folks at Source Technology, and the comments received via this list, I set the MTU size to 1518 in Radius AND on the Default user in the ARC itself. Everything now works flawlessly.
I appreciate everyone's help.
Thanks Robb Bryn
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Hi all! Anybody know what settings I need on HiperDSP(2.0.51) for delay modem answer on 3sec? As I read in documenation s0 register can`t supported and must be set in 0... :-(( Thank for advice! Good luck ! ====================== Andrey Zimin | AVZ7-RIPE MTU-Intel ISP Moscow, Russia ====================== - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
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 ====================== - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
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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From the ATS$ command: == skip 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. I know. Not all S-register on modem worked as defined in help and/or documentations. For sample S55 - USR support only 64S-4D trellis on recive stream.
But I can`t understand why HiperDSP not support 2800 symbol rate, supported on other USR modems line... And other strange thing like that: We are made wide statistical test calls for compiring Cisco (AS5300, MICA modem) and USR Hiper NASes and get very strange output. All calls on Hiper would have more power reduction on high frequencies, in comparison with MICA. For sample two typical calls (from 200 calls series) at same time from one point and one modem: ======= Connection Summary: USR HiPer +-----------------------+-----------------+-----------------------------+ | USRSTATS Version 4.19 | 03-08-00 20:12 | 9955554 | +-----------------------+-----------+-----+-----------------------------+ | Elapsed Time 00:00:31 | Modulation V.34+ | | Blocks Received 9 | Speed 31200/24000 | | Blers 0 | Symbol Rate 3429/3429 | | Blocks sent 12 | Carrier Frequency 1959/1959 | | Link Naks 0 | Trellis Code 64S-4D/64S-4D | | Blocks resent 0 | Nonlinear Encoding On/On | | Link Timeouts 0 | Precoding On/On | | Chars sent 12 | Shaping On/On | | Octets sent 12 | Preemphasis 6/6 | | Chars lost 0 | Rx Lev/TX Lev/SNR 29/10/ 38 | | Chars Received 223 | Echo Loss Near 65 Far 76 | | Octets Received 227 | Roundtrip Delay 6 | | Protocol LAPM | Retrains Request/Grant 0/0 | | Block Size | Fallback Disabled | | Window Size | HST Line Reversals 0 | | Compression V42BIS | HST Equalization Long | | Dictionary Size 2048 | SV: DSP: | | String Length 32 | Reason: Online | +-----------------------------------+-----------------------------------+ Channel Probe: +---------------------------------------------------------------+ | -24 | . x X X X x x x . . . . . . . . . . . . . . . . . | 1 | | -26 | . X X X X X X X X X x x . . . . . . . . . . . . . | 3 | | -28 | . X X X X X X X X X X X X X x x . . . . . . . . . | 5 | | -30 | . X X X X X X X X X X X X X X X X X x x . . . . . | 7 | | -32 | X X X X X X X X X X X X X X X X X X X X X . . . . | 9 | | -34 | X X X X X X X X X X X X X X X X X X X X X X . . . | 11 | | -36 | X X X X X X X X X X X X X X X X X X X X X X X . . | 13 | | -38 | X X X X X X X X X X X X X X X X X X X X X X X . . | 15 | | -40 | X X X X X X X X X X X X X X X X X X X X X X X x . | 17 | | -42 | X X X X X X X X X X X X X X X X X X X X X X X X . | 19 | | -44 |=X=X=X=X=X=X=X=X=X=X=X=X=X=X=X=X=X=X=X=X=X=X=X=X=.=| 21 | | -46 | X X X X X X X X X X X X X X X X X X X X X X X X . | 23 | | -48 | X X X X X X X X X X X X X X X X X X X X X X X X X | 25 | |Level+---------------------------------------------------+Atten| | 0 0 0 0 0 0 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 | | 1 3 4 6 7 9 0 2 3 5 6 8 9 1 2 4 5 7 8 0 1 3 4 6 7 | | 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 | | 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 | +---------------------------------------------------------------+ =============================================================================== Connection Summary: Cisco +-----------------------+-----------------+-----------------------------+ | USRSTATS Version 4.19 | 03-08-00 20:28 | 9955555 | +-----------------------+-----------+-----+-----------------------------+ | Elapsed Time 00:00:33 | Modulation V.34+ | | Blocks Received 10 | Speed 31200/21600 | | Blers 0 | Symbol Rate 3429/3429 | | Blocks sent 9 | Carrier Frequency 1959/1959 | | Link Naks 0 | Trellis Code 64S-4D/64S-4D | | Blocks resent 0 | Nonlinear Encoding On/On | | Link Timeouts 0 | Precoding On/On | | Chars sent 12 | Shaping On/On | | Octets sent 9 | Preemphasis 6/6 | | Chars lost 0 | Rx Lev/TX Lev/SNR 31/10/ 37 | | Chars Received 255 | Echo Loss Near 65 Far 76 | | Octets Received 248 | Roundtrip Delay 6 | | Protocol LAPM | Retrains Request/Grant 0/0 | | Block Size | Fallback Disabled | | Window Size | HST Line Reversals 0 | | Compression V42BIS | HST Equalization Long | | Dictionary Size 2048 | SV: DSP: | | String Length 32 | Reason: Online | +-----------------------------------+-----------------------------------+ Channel Probe: +---------------------------------------------------------------+ | -26 | . . . x . . . . . . . . . . . . . . . . . . . . . | 0 | | -28 | . x X X X X X x . . . . . . . . . . . . . . . . . | 2 | | -30 | . X X X X X X X X X x x . . . . . . . . . . . . . | 4 | | -32 | . X X X X X X X X X X X X X x x . . . . . . . . . | 6 | | -34 | x X X X X X X X X X X X X X X X X X x x . . . . . | 8 | | -36 | X X X X X X X X X X X X X X X X X X X X X X x . . | 10 | | -38 | X X X X X X X X X X X X X X X X X X X X X X X x . | 12 | | -40 | X X X X X X X X X X X X X X X X X X X X X X X X . | 14 | | -42 | X X X X X X X X X X X X X X X X X X X X X X X X x | 16 | |Level+---------------------------------------------------+Atten| | 0 0 0 0 0 0 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 | | 1 3 4 6 7 9 0 2 3 5 6 8 9 1 2 4 5 7 8 0 1 3 4 6 7 | | 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 | | 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 | +---------------------------------------------------------------+ ========
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. :) Not I am. It maked for me one INPRO company engeneer who write code for modem based on Lucent (AT&T) 1634 datapump. He know many backdoors for DSP. As I belive all modem on that chipset may give handshake sequince for human who know secret word... ;-))
Other interesting thing - russian code for popular USR courer modem ID_SDL 4.03 is able get V90 and V42 sequence by ATI30I31 command. ftp://ftp.usr.spb.ru/courier/id_sdl/ I am sorry, but documentation only on russian language... Or special equipment for modem trobleshuting like http://www.analytic.ru/
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. I have V0034e document. It cost no many - ~40$, like good book in shop. ===== ITU-T V.34 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (10/96)
SERIES V: DATA COMMUNICATION OVER THE TELEPHONE NETWORK Interfaces and voiceband modems A modem operating at data signalling rates of up to 33 600 bit/s for use on the general switched telephone network and on leased point-to-point 2-wire telephone-type circuits ITU-T Recommendation V.34 (Previously CCITT Recommendation) ====== Good luck ! ====================== Andrey Zimin | AVZ7-RIPE MTU-Intel ISP Moscow, Russia ====================== - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
On Mon, 13 Mar 2000, Andrey Zimin wrote:
But I can`t understand why HiperDSP not support 2800 symbol rate, supported on other USR modems line...
Dunno... I can try it out here tomorrow. I don't seem to have any calls up at 2800 right now, though I did have some at 2743...
And other strange thing like that: We are made wide statistical test calls for compiring Cisco (AS5300, MICA modem) and USR Hiper NASes and get very strange output. All calls on Hiper would have more power reduction on high frequencies, in comparison with MICA. For sample two typical calls (from 200 calls series) at same time from one point and one modem:
You can tweak the transmit power on the DSP's, though I'm not sure that's what you're shooting for...
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. :) Not I am. It maked for me one INPRO company engeneer who write code for modem based on Lucent (AT&T) 1634 datapump. He know many backdoors for DSP. As I belive all modem on that chipset may give handshake sequince for human who know secret word... ;-))
Ah, so you got it from the client side, not the server side. I did dig around and found documentation on Lucent's web site that says how to pull the v.34 bits out of an LT Win Modem. Not too secret after all... :) - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
And other strange thing like that: We are made wide statistical test calls for compiring Cisco (AS5300, MICA modem) and USR Hiper NASes and get very strange output. All calls on Hiper would have more power reduction on high frequencies, in comparison with MICA. For sample two typical calls (from 200 calls series) at same time from one point and one modem: Oh, sorry - not 200 calls series, only 20... ;-))
You can tweak the transmit power on the DSP's, though I'm not sure that's what you're shooting for... No, I wrote about losses in the top part of a range...
Ah, so you got it from the client side, not the server side. I did dig Yes, sure...
around and found documentation on Lucent's web site that says how to pull the v.34 bits out of an LT Win Modem. Not too secret after all... :) Aha, it`s so ineresting for all. Can you public URL? I`m not so fast for dig Lucent sites....
Good luck ! ====================== Andrey Zimin | AVZ7-RIPE MTU-Intel ISP Moscow, Russia ====================== - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
Thus spake Mike Andrews
So how did you get the INFO0 bits directly? Please share. :)
mdmCsTrainingInfo perchance?
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.
I'd love to get a copy of the v.34 and v.90 specs for my reference here too...anyone know how to get ahold of these? Probably even willing to pay if it isn't too terribly outrageous. -- Jeff McAdams Email: jeffm@iglou.com Head Network Administrator Voice: (502) 966-3848 IgLou Internet Services (800) 436-4456 - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
On Mon, 13 Mar 2000, Jeff Mcadams wrote:
Thus spake Mike Andrews
So how did you get the INFO0 bits directly? Please share. :)
mdmCsTrainingInfo perchance?
That looks promising all of a sudden, yeah, except that it comes up as all zeros on DSP's... yet another feature mismatch. It works on Quads though, so I'll see if I can find a matchup. (Anyone from 3Com who wants to speak up here and save me the reverse engineering work...) :)
I'd love to get a copy of the v.34 and v.90 specs for my reference here too...anyone know how to get ahold of these? Probably even willing to pay if it isn't too terribly outrageous.
You can buy 'em from the ITU-T's website. Problem is all the prices are listed in Swiss Francs, and I don't know enough about the exchange rate to know if it comes out to $20 or $2000. :) Andrey Zimin hinted it was closer to $20. The specs *used* to be freely available, and I have a copy of the 1994 v.34 spec, and v.42, v.42bis, v.8 and some others, but NOT v.90. Some of the people working on the linmodem.org project may have copies too. 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." - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
I do not know how up to date these are, but this is free: http://www.3com.com/technology/tech_net/white_papers/500659.html Sheldon ----- Original Message ----- From: "Mike Andrews" <mandrews@bit0.com> To: <usr-tc@lists.xmission.com> Sent: Monday, March 13, 2000 12:47 PM Subject: Re: (usr-tc) HiperDSP (2.051) can`t support 2800 sumbol rate?
On Mon, 13 Mar 2000, Jeff Mcadams wrote:
Thus spake Mike Andrews
So how did you get the INFO0 bits directly? Please share. :)
mdmCsTrainingInfo perchance?
That looks promising all of a sudden, yeah, except that it comes up as all zeros on DSP's... yet another feature mismatch. It works on Quads though, so I'll see if I can find a matchup. (Anyone from 3Com who wants to speak up here and save me the reverse engineering work...) :)
I'd love to get a copy of the v.34 and v.90 specs for my reference here too...anyone know how to get ahold of these? Probably even willing to pay if it isn't too terribly outrageous.
You can buy 'em from the ITU-T's website. Problem is all the prices are listed in Swiss Francs, and I don't know enough about the exchange rate to know if it comes out to $20 or $2000. :) Andrey Zimin hinted it was closer to $20. The specs *used* to be freely available, and I have a copy of the 1994 v.34 spec, and v.42, v.42bis, v.8 and some others, but NOT v.90. Some of the people working on the linmodem.org project may have copies too.
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."
- To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
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Thus spake Sheldon Koehler
I do not know how up to date these are, but this is free: http://www.3com.com/technology/tech_net/white_papers/500659.html
Pretty much up-to-date, but not terribly in-depth. Certainly not enough for my needs currently. :) -- Jeff McAdams Email: jeffm@iglou.com Head Network Administrator Voice: (502) 966-3848 IgLou Internet Services (800) 436-4456 - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
Thus spake Mike Andrews
That looks promising all of a sudden, yeah, except that it comes up as all zeros on DSP's... yet another feature mismatch. It works on Quads though, so I'll see if I can find a matchup. (Anyone from 3Com who wants to speak up here and save me the reverse engineering work...) :)
Indeed...Mike and I spoke by phone today...but it would be nice (hint, hint, hint) for some kind 3Com person to hop in here and decode this nice opaque string for us. :)
You can buy 'em from the ITU-T's website. Problem is all the prices are listed in Swiss Francs, and I don't know enough about the exchange rate to know if it comes out to $20 or $2000. :) Andrey Zimin hinted it was closer to $20. The specs *used* to be freely available, and I have a copy of the 1994 v.34 spec, and v.42, v.42bis, v.8 and some others, but NOT v.90. Some of the people working on the linmodem.org project may have copies too.
v.34 was, like, $22, and v.90 was around $13. -- Jeff McAdams Email: jeffm@iglou.com Head Network Administrator Voice: (502) 966-3848 IgLou Internet Services (800) 436-4456 - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
participants (5)
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Andrey Zimin -
Jeff Mcadams -
Mike Andrews -
Sheldon Koehler -
Sonny Ruiz