jimmy@cogent.UUCP (Turnando Fuad) (04/28/89)
Request for help to anyone using HP9000/840 running HP-UX 2.1 with Trailblazers. Our trailblazers slows down drastically (to less than 1200 baud) when transmitting at 19,200 baud. The register settings on the Trailblazer is at its correct settings and all. I have talked to Telebit and they can't really figure it out, I have talked to HP support but they are a little reluctant to pursue the matter because Trailblazers is not in their modems support list. The problem started to occur after our update from HP-UX 1.2 to 2.1. All help will be greatly appreciated. Turnando Fuad ( Jimmy ) Cogent Software Solutions ...pacbell!cogent!jimmy ...uunet!lll-winken!cogent!jimmy -- Jimmy Fuad Cogent Software Solutions ...pacbell!cogent!jimmy ...uunet!lll-winken!cogent!jimmy
rjn@hpfcdc.HP.COM (Bob Niland) (04/29/89)
re: "...HP9000/840 running HP-UX 2.1 with Trailblazers." > Our trailblazers slows down drastically (to less than 1200 baud) when > transmitting at 19,200 baud. re: a working HDB UUCP / USR HST setup This is on a Series 300 running HP-UX 6.5. I routinely get ~10,000 bps (1000 bytes/sec) UUCP throughput between my home and work systems (pseudo'd as "hphome" and "hpmain" in the examples below). Note that I am using UUCP 'f' protocol, which: * Enables Xon/Xoff pacing between modem and host * Increases send/ack packet size ratio, so the "fast end/slow end" don't swap on each packet, which would clobber performance. * Converts some (perhaps all) binary data to encoded ASCII to prevent false Xons and Xoffs. File: /usr/lib/uucp/Devices --------------------------- ACUHAYES culd0 cuad0 19200 hayes ACUHAYES culd0 cuad0 9600 hayes ACUHAYES culd0 cuad0 2400 hayes ACUHAYES culd0 cuad0 1200 hayes Direct ttyd0 0 19200 direct Direct ttyd0 0 9600 direct Direct ttyd0 0 2400 direct Direct ttyd0 0 1200 direct File: /usr/lib/uucp/Systems {edited} --------------------------- <sysname> <time>[;<retry>] <sysname> <speed> - <logininfo> hpmain Any;5 ACUHAYES,f 19200 2263800- "" @@ gin:-BREAK-gin:-@-gin:-BREAK-gin:-@-gin:-BREAK-gin:-@-gin: hphome ssword: !passwd! hpmain Any;5 ACUHAYES,f 19200 2263800- "" @@ gin:-BREAK-gin:-@-gin:-BREAK-gin:-@-gin:-BREAK-gin:-@-gin: hphome ssword: !passwd! hpother Any;5 ACUHAYES,f 19200 2293600- "" @@ gin:-BREAK-gin:-@-gin:-BREAK-gin:-@-gin:-BREAK-gin:-@-gin: hphome ssword: !secret! USR HST Switch Settings: ------------------------ The physical switches of the HST mimic the USR2400, which, in turn, emulated the Hayes 'Smartmodem' 1200. These should be old friends to you datacomm hackers out there. "UP"=off=open "DOWN"=on=closed SW HOST TERM Function and comments QUAD UP UP Pins 2&3 not swapped. This should not be necessary if you are using a proper DTE cable. In the case of 98642A Port 0, any straight-thru male-to-male will do. I am using the 92219S supplied with the MUX. If you have a cable in which 2/3 are incorrect, you probably have other equally serious pin-out problems. 1 UP UP DTR normal. All HP terminals and properly configured host connections should assert Data Terminal Ready. I suspect that if you jam DTR high, the host computer loses its expected method of telling the modem to hang up in some circumstances. 2 UP UP Verbal (rather than numeric) result codes sent. 'Dialers' is expecting verbal codes. Terminal users find them easier to grasp than numbers. Dialers will override this to "verbal" ("V1") in any case. 3 DOWN DOWN Send result codes. 'Dialers' expects them, and they make terminal life easier, too. Dialers overrides this to "send" ("Q0"). 4 UP UP 'AT' commands echoed in modem-local mode. You need this on a real terminal to see what you are typing. 'Dialers' issues an E0 command to turn it off, and so doesn't care. 5 UP DOWN Auto-answer enabled for host, disabled for terminal. This is the only case where HOST and TERM differ (so far). 6 UP UP Carrier Detect controlled by modem. This is what causes 'getty' to run at login time. If you set it DOWN for "always-on" you probably won't be able to dial-in. A real terminal, on the other hand, probably doesn't care. 'cu' does, however. If you jam CD high, the modem may be unable to tell the host computer that the session has died (e.g. remote user disconnected without logging out). 7 UP UP Single-line phone (RJ-11C). Check your phone. 8 DOWN DOWN 'AT' commands recognized. 'Dialers' insists. A case where the terminal end might wish to disable AT is if auto-dialers are illegal or inoperative on your phone system. Are you still using a crank telephone? 9 UP UP <pause>+++<pause> puts modem in command mode AND drops carrier. DOWN does not drop carrier, and this can put a 'cu' connection into a weird state. UP will let you know right away that you goofed and blew the connection. 10 UP UP Load configuration from NRAM at power-up (rather than use factory defaults). If you insist on using DOWN, you might as well skip the next section :-) USR HST Configuration Settings: ------------------------------ ATI0 964 OK ATI1 059 56 9419 OK ATI2 OK OK ATI3 00:22:04 OK ATI4 USRobotics Courier 9600 HST Settings.... C=1 E=1 F=1 M=1 Q=0 V=1 X=0 B=1 BAUD=19200 PARITY=N WORDLEN=8 DIAL=TONE ON HOOK TIMER &A1 &B1 &G0 &H2 &I5 &K1 &M4 &N0 &P0 &R1 &S1 &Y1 S00=000 S01=000 S02=043 S03=013 S04=010 S05=008 S06=002 S07=045 S08=002 S09=006 S10=007 S11=070 S12=050 S13=000 S14=000 S15=000 S16=000 S17=000 S18=000 S19=000 S20=003 S21=010 S22=017 S23=019 OK ATI5 USRobotics Courier 9600 HST NRAM Settings.... DIAL=TONE M=1 X=0 F=1 B=1 BAUD=19200 PARITY=N WORDLEN=8 &A1 &B1 &G0 &H2 &I5 &K1 &M4 &N0 &P0 &R1 &S0 &Y1 S02=043 S03=013 S04=010 S05=008 S06=002 S07=045 S08=002 S09=006 S10=007 S11=070 S12=050 S13=000 S15=000 S19=000 S21=010 S22=017 S23=019 STORED PHONE #0: #1: #2: #3: OK ATI6 Chars sent 392 Chars received 148041 Chars lost 0 Octets sent 392 Octets received 103001 Blocks sent 371 Blocks received 2343 Blocks resent 11 Retrains Requested 0 Retrains Granted 0 Line Reversals 0 Blers 0 Link Timeouts 0 Link Naks 0 Data Compression On Equalization Long Fallback Enabled Speed 9600/300 Disconnect Reason is Loss of Carrier OK ATI7 USRobotics Courier 9600 HST Configuration Profile: Product type External Custom chip U100 Clock freq 14.976 Options Standard Supervisor date 03/07/88 Supervisor rev 4 Transmitter rev 2 Receiver rev 2 I have a register-by-register narrative for the HST, but thought it a bit long to post. Regards, Hewlett-Packard Bob Niland 3404 East Harmony Road ARPA: rjn%hpfcrjn@hplabs.HP.COM Fort Collins UUCP: [hplabs|hpu*!hpfcse]!hpfcla!rjn CO 80525-9599