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- Newsgroups: comp.dcom.modems
- Path: sparky!uunet!wupost!csus.edu!netcom.com!wolfgang
- From: wolfgang@netcom.com (Wolfgang Henke)
- Subject: Re: Digicom Scout+ problems
- Message-ID: <1993Jan8.175418.16707@netcom.com>
- Organization: Netcom
- X-Newsreader: Tin 1.1 PL5
- References: <1993Jan8.045259.19494@netcom.com>
- Date: Fri, 8 Jan 1993 17:54:18 GMT
- Lines: 94
-
- Sunrise Test Systems (srtest@netcom.com) wrote:
- : I've recently installed a Scout+ on a SPARC and had a problem calling
- : into it.
- :
- : Whenever I call into the modem from a remote (another Scout+ in
- : some cases), I have negoitation/handshake problems. The
- : manifestations of the problem vary, but the most common failure mode
- : is that the modem negoitates after carrier detect and seems to decide
- : on something, then stops sending a carrier signal. The calling
- : modem gets confused and the connection is dropped.
-
- This behaviour typically occurs if there is a problem with the error-
- correction or compression negotiation at the end of the handshake.
- Maybe the modems cant agree on the size of the V.42 translate tables.
- This does not usually occurr between Scout+ modems, but might occur
- sometimes between older modems and the Scout+.
-
- If you email me the dialin number, I'll be happy to run some tests on it
- and see if this analysis holds up.
-
- : Various other modems have attempted to call in and had the same
- : problems, even at low baud rates. I tried substituting a PPI
- : modem for the Scout+ and found the problems went away.
- : I suspect a noisy power source for the SPARC's modem, and
- : will be trying a relatively good surge protector/EMI/RFI filter
- : to attempt to fix the problem.
- :
- : Has anyone else had power source noise sensitivity problems with
- : their modems?
-
- Just for your reference, here I append the init strings and
- configurations I use on different computers:
-
- Setup for the Digicom Scout+ modem.
-
- Init string for IBM compatibles: AT&F&W
- Software Qmodem
-
- at*o
- MODEL:SCOUT PLUS
- DTE: 38400 N81
- DCE: IDLE
-
- E1 K1 M1 Q0 V1 X4 TONE
- &B0 &C1 &D2 &R2 &T5
- *E9 *F3 *G1 *M1 *N6 *P0 *Q1 *S1 *T1
-
- S00=002 S04=010 S08=002 S15=255
- S01=000 S05=008 S09=000 S18=000
- S02=043 S06=002 S10=003 S25=000
- S03=013 S07=045 S12=050 S26=000
- OK
-
- Init string for Apple MacIntosh: AT&F&D0&W
- Software Quicklink II, cable included with modem
-
- at*o
- MODEL:SCOUT PLUS
- DTE: 38400 N81
- DCE: IDLE
-
- E1 K1 M1 Q0 V1 X4 TONE
- &B0 &C1 &D0 &R2 &T5
- *E9 *F3 *G1 *M1 *N6 *P0 *Q1 *S1 *T1
-
- S00=002 S04=010 S08=002 S15=255
- S01=000 S05=008 S09=000 S18=000
- S02=043 S06=002 S10=003 S25=000
- S03=013 S07=045 S12=050 S26=000
- OK
-
- Init string for Sun 3/60: AT&F*F2*M0X5M0&W
- Software tip from 4.1.1
-
- at*o
- MODEL:SCOUT PLUS
- DTE: 38400 N81
- DCE: IDLE
-
- E1 K1 M0 Q0 V1 X5 TONE
- &B0 &C1 &D0 &R2 &T5
- *E9 *F2 *G1 *M0 *N6 *P0 *Q1 *S1 *T1
-
- S00=002 S04=010 S08=002 S15=255
- S01=000 S05=008 S09=000 S18=000
- S02=043 S06=002 S10=003 S25=000
- S03=013 S07=045 S12=050 S26=000
- OK
-
-
- --
- _________________________________________________________________________
- Wolfgang Henke Data lanes not car pool lanes wolfgang@netcom.com
-
-