Telecom Regulatory Authority of India, TRAI Guidelines (TCCCPR 2018)-in a phut angin BSNL Customer-te chuan an mobile emaw landline emaw atangin SMS emaw call hmangin sumdawnna (commercial communication) atan an ti tur a ni lo. Hetiang phalloh thil ti luite chu an number restrict (phuar) emaw blacklist theih a ni.

TRAI Regulation thar angin, BSNL number hmanga sumdawnna (commerical communication) ti duhte (BSNL Subscribers, Business Entities & Telemarketers) chuan BSNL hnuaiah an in-register tur a ni a. Hemi atan hian BSNL chuan portal thar www.uccbsnl.co.in a siam thar a. Heta in-register te chu sumdawnna tur number series emaw SMS-na tur number pek an ni ang a; hrechiang duh emaw in-register duhte tan www.uccbsnl.co.in ah enfiah theih a ni.