[AusNOG] ISDN acting the maggot

[Geordie Guy]

Hi folks,

CE question but hopefully someone has an idea amidst the hail of "take it
to SAGE".  What would cause an ISDN connection to be able to be looped back
fine both ends (so a loopback on the provider end is visible and get CD
*AND* a loopback on customer end shows at provider the same) but if the
connection is provider to customer there's no carrier?

- Geordie
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