"I think" the port on the router if it says bri is the te1 device and if that 
is so, then it is the s interfact or s/t.  depends on if you have a nt2 or 
not...  hope that helps.

The rule as I understand it" ( wording this carefully)

te1(non isdn) to ta(modem) r interface
ta (modem) to te1 (telephone-bri)  s interfact
te1 to nt2  s interface
nt2 to nt1 t interface
nt1 to service provider  u interface

I think this is right.  Someone please comment if I am wrong........

Jennifer C


>===== Original Message From "Samuel P" <[EMAIL PROTECTED]> =====
>Hi Folks
>
>How do I identify if an ISDN port on a 2503 router is an "S/T or a "U"
>interface.
>Either by physical verification or using the CLI. The port on the router
>says ISDN BRI.
>Could someone please help me out.
>
>Thanks
>
>SP
>
>_________________________________
>FAQ, list archives, and subscription info: 
http://www.groupstudy.com/list/cisco.html
>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]


>===== Original Message From "Samuel P" <[EMAIL PROTECTED]> =====
>Hi Folks
>
>How do I identify if an ISDN port on a 2503 router is an "S/T or a "U"
>interface.
>Either by physical verification or using the CLI. The port on the router
>says ISDN BRI.
>Could someone please help me out.
>
>Thanks
>
>SP
>
>_________________________________
>FAQ, list archives, and subscription info: 
http://www.groupstudy.com/list/cisco.html
>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]

------------------------------------------------------------
Have a Good Day!!
Jennifer Cribbs
[EMAIL PROTECTED]

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