3GPP TS 12.12 – Maintenance of Circuits betweenMobile System Entities 3GPPTS12_series12.12 SPECIFICATION WITHDRAWN Related SpecTS 12.10 Maintenance Provisions for Operational Integrity of MSsTS 12.11 Fault management of the Base Station System (BSS)TS 12.15 General Packet Radio Service (GPRS); GPRS Charging