I’m not a motorola expert, so i’m just sharing a thought 🙂
T200 and SCCP are on two different interfaces.. T200 is probably linked to the LapD of the Abis (or Air), and the SCCP to the A/Atermux interface.
Having a failure on both sides but without impacting the ongoing TCH calls would point towards a BSC signalling board failure ?
Do you know the cause of the SCCP disconnection? There are probably some counters counting the different possibilities.