newbie question: cisco router rs232 and clock rate

[henrybb]

I remember rs232 speed is up to 19.2 kbps,but why I can config clock rate to 128000 when I plug the 232 DCE cable to 2611's nm-8a/s?

I can't understand.Is cisco's rs232 enhanced rs232 or something else ?

thanks!

[jasonrakers]

Actually RS-232 can go higher than 19.2k. I know I have used them as a standard cable for Dedicated 56k circuits. Greater than a T1 I have always used V.35 cables.

The problem you have is the interface you are using. The NM-8A/S can only go up to 115k. You need to use a normal serial interface like a WIC or NM-4T if you want a higher clockrate..