>It can be hard to find specifications in the ETSI system, because their >document naming and search facilities are somewhat lacking. I never >understood why it was specified, or who might use it. However, there are >specific ETSI documents for EuroISDN over T1. I've stumbled on them in >the past and been puzzled. As far as I recall, they say little that is >surprising. Its just the same as over E1, but the last channel in >channel D, and the maximum B channel are only 0 to 22. > > > You supprice me. I did a search, but as you say ETSI is a mess unless you know exactly what document number to look for. However, the implementation in libpri means that T1 and E1 are different on Layer 3 for EuroISDN, but I have a feeling that this is not 'EuroISDN', but a tweaked version that is closer to NI. It could also be that the differences are accidental (a bug). But, do anyone actuially use this?
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