Tony Mountifield wrote:
> I have been asked by a potential customer whether we can connect an
> Asterisk box to an Ericsson MD110 that has an E1 port with ISDN-USR.
> They are unable or unwilling to upgrade their E1 port to QSIG.
> 
> Has anyone here had experience of successfully making such a connection?
> I have found a couple of hits on Google that suggest it "should" work,
> but I'm after something a little more definitive, based on actual
> experience, if possible.
> 
> Can anyone tell me what the "USR" part of ISDN-USR actually means?
> 
> Thanks
> Tony
> 
I would assume that "USR" is the user side of the connection, where
the other side is the "NET". The * term is "CPE". But that does not
describe which protocol they are using (EuroISDN, QSIG, etc..).

But thats only a guess.

Best regards

Hans

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