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To avoid last minute rush, TRAI has asked all subscribers of Loop Mobile to avail itself of the facility of mobile number portability to shift to other operators' networks at least a week before November 29, after which the Mumbai-based firm will not be able to offer telecom services.
The company had to buy spectrum afresh to continue its operations but it did not participate in the auction held in February.
"TRAI appeals to all subscribers of Loop to avail of the facility of mobile number portability to port their mobile number to any operator of Mumbai service area, preferably at least one week before November 29, 2014 to avoid the last minute rush," the regulator said in a statement.
TRAI had earlier directed Loop Mobile to inform the date of closure of its services in Mumbai to all subscribers either in writing or by sending an SMS or email.
Telecom major Bharti Airtel had called off the deal to acquire business and assets of Loop Mobile including subscribers for about Rs 700 crore, pending clearances by the Department of Telecom.
DoT estimates that Loop Mobile and its sister concern Loop Telecom owe about Rs 808 crore in spectrum and other charges to the government.
