I have an old csu/dsu (rad  fcd 1 ) conected to a 7500 router. we use this
T1  to enable two of our sites to communicate point to point (all is working
at the moment). However I am trying to implement that same connection with a
2610 with a built in csu/dsu. Originally I configure the Controller on the
2610 to use ESF framing , B8ZS and PPP encapsulation.  This router was in
operation before , being used as an Internet router 
so I know the HW is good. Hower when i connected the 2610 with the new
config (wiped out old onfig when used for internet) to the TI (provided by
PAC BELL) being use on the 7500 I got some weird results. 
serial x (reset) , line prot down

Then I changed the encapsultion to HDLC ,that got rid of the reset , and
changed the framing to SF . When I changed to framing ,  i got se up, line
prot  up , then few seconds later  i did a sh int  and saw the  up , down.
I tested my controller to make sure HW is ok by connecting it to one of the
T1'S providing internet access. It worked fine , off course I had to change
to esf, b8zs and ppp.

Is it the telco who prvides us what we should use as framing, linecode and
encapsulation?  or does it depend on the csu/dsu being used.  ??? 

 

Mo Durrani
IS&T 
WYSE\EDS
phone:408-473 1246
[EMAIL PROTECTED]
[EMAIL PROTECTED]


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