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New Member

Modem speed change

I configured aux 0 for my modem speed to 115200 but it kept changing to different speed. is there something I have to do in the modem to fix it?


line aux 0

exec-timeout 0 0

password 7 15135A5D50070E747C26

modem InOut

modem autoconfigure type usrmodem

transport input all

stopbits 1

flowcontrol hardware

speed 115200

RTR_CN#sh line aux 0

   Tty Line Typ     Tx/Rx    A Modem  Roty AccO AccI  Uses  Noise Overruns  Int

*     1    1 AUX  57600/57600 - inout     -    -    -     0      0    0/0      -

Line 1, Location: "", Type: ""

Length: 24 lines, Width: 80 columns

Baud rate (TX/RX) is 57600/57600, no parity, 1 stopbits, 8 databits

Status: Ready, Active, No Exit Banner, CTS Raised, Modem Configuring

  Modem Speed Locked, Modem Signals Polled, Autoconfig Running

Capabilities: Hardware Flowcontrol In, Hardware Flowcontrol Out

  Modem Callout, Modem RI is CD, Modem Autoconfigure

Modem state: Ready

Modem hardware state: CTS* noDSR  DTR RTS

Special Chars: Escape  Hold  Stop  Start  Disconnect  Activation

                ^^x    none   -     -       none

Timeouts:      Idle EXEC    Idle Session   Modem Answer  Session   Dispatch

                never         never                        none     not set

                            Idle Session Disconnect Warning


                            Login-sequence User Response


                            Autoselect Initial Wait

                              not set

Modem type is usrmodem.

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 lapb-ta mop udptn v120 ssh.

Allowed output transports are pad telnet rlogin lapb-ta mop v120 ssh.

Preferred transport is telnet.

Shell: enabled

Shell trace: off

No output characters are padded

No special data dispatching characters


Everyone's tags (4)
New Member

Modem speed change

Hi Alison,

You can try using the commands rxspeed 115200 and txspeed 115200 but it is more likely caused by the aux port getting the line speed from the modem. The autoconfigure script could be detecting the DTE port speed from the modem configuration. Does the aux port line speed remain at 115200 if you remove the command "modem autoconfigure type usrmodem" and you reconfigure the speed to 115200? If it does, then you will likely need to configure the modem DTE port speed by reverse telneting into the modem and using the AT command set.



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