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From: Kilgore Trout on 7 Jan 2007 09:08
On 2007-01-06 11:01:25 -0500, Wil Schultz <wil(a)SPAMTHIS.org> said:

> Carlos Trout wrote:
>> On 2007-01-03 15:15:22 -0500, Wil Schultz <wil(a)SPAMTHIS.org> said:
>>
>>> Carlos wrote:
>>>> I've had success with the Prolific pl2303-based usb-to-serial dongle on
>>>> my Powerbook configuring Cisco routers via the console port. I recently
>>>> tried connecting to a Catalyst 1900 and couldn't get it to work. All I
>>>> get are the strings "ATQ0H0" and "ATQ0Z0". Port is setup 9600/N/8/1 as
>>>> usual. Sending a "break" causes alternate responses of ATQ0h0 and
>>>> ATZ0H0.
>>>>
>>>> Tried using a legacy Mac as well as a Windows PeeCee, both with
>>>> built-in serial ports, both worked. I need to make sure this works on
>>>> my Powerbook since it's the machine I'll be using for on-site setup.
>>>>
>>>
>>> I've been using the keyspan dongle for ages.
>>>
>>> Your problem doesn't sound like a dongle problem but maybe your
>>> terminal emulation program. What are you using? Might want to take a
>>> look at ZTerm
>>
>> Using ZTerm both on the PowerBook with Prolific USB-Serial as well as
>> on the Legacy Mac with built-in serial. Also tried QuickTerm with the
>> same results. Tried both USB ports on the PowerBook, no change. While
>> it may be the terminal emulation program, I can't for the life of me
>> figure out what's causing it. And again, it works fine on OS 9 machine
>> with the same carbon-version of ZTerm.
>>
>
> Have you tried using a null modem adapter? They cost less than $5 and
> will possibly fix this for you. If not, you will have to make your own
> cable: http://www.tek-tips.com/faqs.cfm?fid=643

Yes, I tried this and got absolutely nothing. I think Bod43 is on the
right track when he says the switch thinks it's connecting via modem. I
just don't know how to disable/fix that.


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