How to Loopback Test
It is possible to configure a cable as a Loopback connector. For PRI you need to connect the Pins:
1-4 2-5
and for BRI:
3-4 5-6
When you plugin such a cable into an ISDN PRI or BRI Port which is configured as "TE" and "PTP", the L1 Link should get up and thus indicate that the BRI/PRI Port is working fine.
If you need scheduled remote assistance, you can request our on-demand support services: https://www.beronet.com/support