From Bloomberg News

AT&T shouldn’t disrupt Sprint Nextel Corp.’s ability to connect calls to customers in Puerto Rico for at least 18 months after buying Centennial Communications Corp., Sprint told regulators.

AT&T should continue to support interconnection from customers of other mobile phone companies with the signal type used by Centennial and Sprint, Sprint told the Federal Communications Commission on Oct. 8, according to a disclosure filing at the agency. AT&T uses a different standard.

The FCC and Justice Department are weighing AT&T’s planned $945 million purchase of Centennial, which the companies proposed in November. AT&T Chief Executive Officer Randall Stephenson said Sept. 29 that the review has been “surprisingly long.”

Sprint “is not asking the commission to prevent or delay” conversion of Centennial’s network to AT&T’s transmission standard, Sprint said in its filing posted on the FCC’s Web site Oct. 9. It said it wants the FCC to ensure AT&T maintains airwaves to support calls on the standard Sprint uses “for a relatively short period.”