From: Erick B. (erickbe@xxxxxxxxx)
Date: Mon Oct 02 2000 - 03:40:02 GMT-3
Scott,
I know what ISDN is. Please re-read my posting. The
problem I had was the provider was using basic-ni and
the router was configured for basic-ni and when we
placed calls the other side would answer and both
sides would hang up with normal call clearing. The fix
was changing the *global* ISDN switch type to dms100
and we left the interface switch type set to basic-ni.
eg:
isdn switch-type basic-dms100
(was isdn switch-type basic-ni)
interface BRI0
isdn switch-type basic-ni // NOT changed
So, I thought there might be someone on the list able
to answer whether the global or interface switch-type
takes precedence, or if the global switch type
slightly changes the way the IOS handles ISDN stuff
internally.
Probably one of them strange 12.x bugs.
--- Scott Morris <smorris@mentortech.com> wrote:
> ISDN Switch types are DEFINITELY used by IOS. It
> specifies HOW a router
> will talk to an ISDN switch. think of it as a
> dialect within a particular
> language. If you are from the deep south of the US,
> you would have a heck
> of a time speaking to someone from Brooklyn...
> (Just as an example)
>
> ISDN switch types are LOCALLY SIGNIFICANT between
> your CPE device (router)
> and the providers' ISDN switch. It has nothing to
> do with end-to-end
> communication.
>
> Speak with your service provider, and see what type
> their switch is
> expecting to talk to you as. I would suspect that
> if you see the calls
> coming in, and answering then dropping that you're
> looking at a different
> problem other than ISDN switch types.
>
> Scott
>
> -----Original Message-----
> Hello,
>
> I was wondering if anyone knew how IOS really uses
> the
> ISDN switch type specified. I haven't been able to
> find a answer for this yet, other then huh?
>
> I was connecting a remote site w/BRI to a central
> site
> w/PRI. The Central site was connected to ISDN switch
> that used dms100 type and the remote site was
> basic-ni.
> The problem was on the remote site w/BRI and
> globally
> we had isdn-switch type basic-ni and also on the BRI
> interface. ISDN was showing up, spids were good,
> etc.
> We could dial, PRI would get call and we would drop
> right away without getting to PPP. Cause on both
> sides
> was normal clearing. Configs are good - we have
> other
> sites dialing in here just with pretty much same
> config.
>
> After we changed the global ISDN switch type to
> dms100
> and left the BRI interface set to basic-ni it works
> fine. I thought the switch type on the interface
> took precedence or does the global isdn switch type?
> I'm puzzled on this and want to know why.
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:25:22 GMT-3