Hi,
On Sun, 18 Nov 2012, s m wrote:
thanks Juergen
what i've got from your words is: for connecting modem to cisco we should
reverse send and receive while for connecting cisco to PC it should be
straight. is it true or i misunderstand what you mean?
exactly the opposite:
For Cisco to PC you need a rolled cable as both devices classify as DTE (Data
Terminal Equipment).
For Cisco to Modem you need a straight cable as the modem is a DCE (Date
Communication Equipment).
The blue console cable is a rolled cable. If you look at the connectors closely
and you will see the colors reversed.
So just grab a regular patch cable and you should be fine.
Greetings
Christain
this connection is so important for me therefore i want to buy a cable but
don't know what exactly cable i should buy. please help me to buy a correct
one.
thanks for your attention
On Sat, Nov 17, 2012 at 6:04 PM, Juergen Marenda <c...@marenda.net> wrote:
On Sat, Nov 17, 2012 at 02:22:58PM +0330, s m wrote:
hello guys
i wanna connect a modem to a 2800 router by AUX port. this is my
configuration:
modem InOut
modem autoconfigure discovery
transport input all
stopbits 1
speed 38400
flowcontrol hardware
the speed value changes because "mode autoconfigure discovery" is set.
i used blue console cable RJ45 to DB9 for connecting AUX port to modem.
use the black cable or the supplied 9-to-25 CON-MODEM-adapter.
the light-blue cable is to connect to a PC-AT Serial Port.
Or crimp an RJ45 Plug reverse on the router's end of the cable .
Or use a NULLmodemcable beetween Modem and DB9 "con" .
You should be able to telnet ip-of-your-router 2001 ,
authenticate at router, and then speak with the modem.
If you connect PC with Hyperterm instead of the modem,
and this works, then it will not work with the modem,
and you need to get/build a fitting cable, see above.
[...]
i read when the connection is correct, modem hardware stats should be CTS
not noCTS. moreover i can not do reverse telnet to modem.
YOur cabling is wrong, both sides SEND and RECIVE Lines are connected
together
(RS232 i must be shorit-ciruit proof, +-12 V...)
please let me know how i should fix it and configure my modem by AT
commands.
Hope this helps,
Juergen.
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