V.32bis modem on NeXT serial port slow...

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5 total messages Started by Ray Lauff Mon, 28 Sep 1992 20:18

#1102

Author: Ray Lauff
Date: Mon, 28 Sep 1992 20:18

17 lines
1210 bytes

I have a 9600 speed modem connected to my NeXT which
works fine at 9600 but will not compress and run at 57,600
as the documentation states.  It seems to me that since I set
the port to 9600 in the /etc/ttys file that it can't send
data any faster.  As a result, when I transfer files I am
getting typical character per second rates of around 650 cps.

How can I take advantage of the 57,600 these 2 modems with
data compression are suppost to get me?  Can i set the
serial port to 57,600??  

I have the excellent document that someone on this list sent
me to describe how to connect it up (thanks!) but it doesn't
address using the high speed option.  Any help appreciated.

Ray
ray@astro.temple.edu

Re: V.32bis modem on NeXT serial port slow...

#1105

Author: bohlkejh
Date: Tue, 29 Sep 1992 00:46

15 lines
1200 bytes

In article <1992Sep28.201813.2490@cronkite.ocis.temple.edu>  
ray@astro.ocis.temple.edu (Ray Lauff) writes:
> I have a 9600 speed modem connected to my NeXT which
> works fine at 9600 but will not compress and run at 57,600
> as the documentation states.  It seems to me that since I set
> the port to 9600 in the /etc/ttys file that it can't send
> data any faster.  As a result, when I transfer files I am
> getting typical character per second rates of around 650 cps.

I did not change my /etc/ttys file and I am getting > 50kbps with my ZyXel  
modem which runs at 38.4kbps to the serial port.


Jon

Re: V.32bis modem on NeXT serial port slow...

#1107

Author: felix.lugo
Date: Tue, 29 Sep 1992 01:56

17 lines
1082 bytes

In article <1992Sep29.004641.12797@cs.rose-hulman.edu> bohlkejh@nextwork.rose-hulman.edu writes:
>
>I did not change my /etc/ttys file and I am getting > 50kbps with my ZyXel  
>modem which runs at 38.4kbps to the serial port.
>
>
>Jon
>

	Gee, you achieved 50Kbps even though your port was set at 38.4Kbps!
8^O

I've had a ZyXEL U1496 (the LCD model) and the throughput display has always
topped at around 35-38Kbps.  Check your numbers, what you're saying is not
possible!!!.  8^)

--Felix

Re: V.32bis modem on NeXT serial port slow...

#1183

Author: Bjoern Kriews
Date: Sun, 04 Oct 1992 02:05

21 lines
1222 bytes

ray@astro.ocis.temple.edu (Ray Lauff) writes:
>I have a 9600 speed modem connected to my NeXT which
>works fine at 9600 but will not compress and run at 57,600
>as the documentation states.  It seems to me that since I set
>the port to 9600 in the /etc/ttys file that it can't send
>data any faster.  As a result, when I transfer files I am
>getting typical character per second rates of around 650 cps.

You can'r go above 9600 with old machines and not above 38400
with new ones.

Add the gettytab entries for 19200 and 38400, then use 38400
in /etc/ttys. Be sure you have correct hardware flow control
wiring.

I run my USR Courier that way and I get ~1690 cps with phys.
14400 and V42bis.

Regards, Bjoern
-- 
bkr@drdhh.hanse.de - Bjoern Kriews - Stormsweg 6 - D-2000 Hamburg 76 - FRG

Re: V.32bis modem on NeXT serial port slow...

#1201

Author: David Lemson
Date: Mon, 05 Oct 1992 18:20

13 lines
1065 bytes

bkr@drdhh.hanse.de (Bjoern Kriews) writes:

>You can'r go above 9600 with old machines and not above 38400
>with new ones.
You can go to 19.2 with few errors on an 030 cube running 2.1, in my
experience.  (I get 1.7 KB/sec with a V.32bis/V.42bis transferring
uncompressable data with FTP over SLIP)

-- 
David Lemson                                                (217) 244-1205
University of Illinois NeXT Campus Consultant / CCSO NeXT Lab System Admin
Internet : lemson@uiuc.edu                UUCP :...!uiucuxc!uiucux1!lemson 
NeXTMail accepted                                  BITNET : LEMSON@UIUCVMD

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