01-17-2007 04:17 AM
Hi,
I want to connect a cellphone with an internal modem to the aux port of my router. Deriving from
http://www.cisco.com/en/US/tech/tk801/tk36/technologies_tech_note09186a0080094bbc.shtml
this should generally be possible.
However, modem autoconfigure discovery does not detect any device on the aux port, even though the modem of the cellphone could be reached via a PC com-port before. I have also tried to set the aux port manually, with the same result. I have also used a different device's aux port for comparison, with no result.
The cellphone data cable uses a standard 9-pin female connector - to connect it to the 9-pin female connector of the console cable on the aux port, I use a common gender changer.
#sh run | begin line aux 0
line aux 0
password public
login
modem InOut
modem autoconfigure discovery
transport input all
#sh line 65
[ignore the speed, this one changes constantly due to autoconfigure, of course]
Tty Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int
* 65 AUX 38400/38400 - inout - - - 0 0 0/0 -
Line 65, Location: "", Type: ""
Length: 24 lines, Width: 80 columns
Baud rate (TX/RX) is 38400/38400, no parity, 2 stopbits, 8 databits
Status: Ready, Active, No Exit Banner, Modem Configuring,
Modem Speed Locked, Modem Signals Polled, Autoconfig Running
Capabilities: Modem Callout, Modem RI is CD, Modem Discovery
Modem state: Ready
Modem hardware state: noCTS noDSR DTR RTS
Special Chars: Escape Hold Stop Start Disconnect Activation
^^x none - - none
Timeouts: Idle EXEC Idle Session Modem Answer Session Dispatch
00:10:00 never none not set
Idle Session Disconnect Warning
never
Login-sequence User Response
00:00:30
Autoselect Initial Wait
not set
Modem type is unknown.
Session limit is not set.
Time since activation: never
Editing is enabled.
History is enabled, history size is 20.
DNS resolution in show commands is enabled
Full user help is disabled
Allowed input transports are pad telnet rlogin mop udptn v120 ssh.
Allowed output transports are pad telnet rlogin mop v120 ssh.
Preferred transport is telnet.
No output characters are padded
No special data dispatching characters
Output of "debug confmod":
Mar 1 03:40:48.927: TTY65: detection speed (115200) response ------
*Mar 1 03:40:55.055: TTY65: detection speed (57600) response ------
*Mar 1 03:41:01.183: TTY65: detection speed (38400) response ------
*Mar 1 03:41:07.311: TTY65: detection speed (19200) response ------
*Mar 1 03:41:13.439: TTY65: detection speed (9600) response ------
*Mar 1 03:41:19.567: TTY65: detection speed (2400) response ------
*Mar 1 03:41:25.695: TTY65: detection speed (1200) response ------
*Mar 1 03:41:31.823: TTY65: detection speed (300) response ------
*Mar 1 03:41:31.823: TTY65: No modem found
Any ideas about why this does not work as expected, and how to correct it?
Solved! Go to Solution.
01-18-2007 06:19 AM
All the cisco AUX port cables that I've seen are DB25. You might find one on the web, otherwise you have to order a custom-made one or make one yourself.
01-17-2007 10:58 PM
If you are using your router's console cable then that is the problem. Check this for the differences in signals and pinouts:
01-18-2007 03:12 AM
Thank you. But that section is about DB-25 ports, while my router (which is a 2600) has a RJ45 aux port.
According to the document you point at, section 15, the pinouts for aux and console ports are identical.
Thus, the console cable should be usable for this setup? Or am I misreading anything here?
01-18-2007 05:28 AM
This document will make things cleare:
http://www.cisco.com/en/US/products/hw/routers/ps214/products_tech_note09186a00801f5d85.shtml
Please compare the Console<--->DB25 to AUX<--->DB25. You'll see that signals go to different pins.
01-18-2007 06:02 AM
I see. So what I need is a special cable that connects the Aux Port in a different way than a Console cable. Thanks so far.
Is there a pre-manufactured cable from Cisco (or someone else) for the purpose of connecting modems that use a DB-9 connector?
01-18-2007 06:19 AM
All the cisco AUX port cables that I've seen are DB25. You might find one on the web, otherwise you have to order a custom-made one or make one yourself.
01-18-2007 11:20 PM
Thank you.
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