We have a donated Modular PBX at each of four Heritage Railway stations with a typical system version 'SP: 30HvG09 GP2' and Feature Cartridge: 'NNTM040BB910; NT7B79AY-93;Rel 01 Mfg 980323;i/c 102463 v6.9;i420 FEAT CART 50A'.
Running NRU 11 on a FastRad (downgraded E-Rad) we get 'System unknown...
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