Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Cisco 3825, WIC-2T and X.21. Maximum speed?

Little confused about the using the WIC-2T card in the Cisco 3825 router with an 8Mbps, X.21 serial WAN Link.

The WIC-2T data sheet mentions that there are known problems with X.21 above a clock speed of 4MHz (surely that is 4Mbps).

Bottom line, is 4Mbps the max on the WIC-2T at X.21?

1 REPLY
Hall of Fame Super Gold

Re: Cisco 3825, WIC-2T and X.21. Maximum speed?

Yes. You need balanced interface for high speeds, and in most cases, X.21 is not. So if doesn't work, cisco declines responsibilities.

Would be curious to know which telco is giving you an 8 mbps circuit with X.21 interface. Or it is a microwave link ?

588
Views
0
Helpful
1
Replies