When to use what? ds0 or pri groups

[snootalope]

I don't understand I guess..

When does one need to use a ds0-group rather than a pri-group when it comes to T1/PRI's on a router, any router. (1751 in my case)

I've read what I could from Cisco and even went back to the CCNA books looking for the straight up answer, but I guess I don't get it.

Anyone care to explain?? I'd really appreciate it.

 

[jeter]

This is for a PRI

!
isdn switch-type primary-ni
!
controller T1 0/0/0
framing esf
linecode b8zs
pri-group timeslots 1-24 <---- NOTE YOU STILL USE 24CH

IF FRACTIONAL IT WOULD BE LIKE THIS
pri-group timeslots 1-12,24
!
interface Serial0/0/0:23
no ip address
encapsulation hdlc
isdn switch-type primary-ni
isdn incoming-voice voice
no cdp enable
!
!

DSO group would be for standard T1 using all or part of
24 channels.....

Cisco CVOICE book will explain this further!!!!!



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