INTERNET SERVICES JUGGERNAUT Google has offered its excuses to the FCC in an ongoing row with AT&T over allegations that it blocks phone numbers on its VoIP service Google Voice.
The company released a response to the FCC on Wednesday explaining how Google Voice works and why it blocked certain numbers.
Though much of the letter replied to FCC inquiries about how Google Voice operates, the company also answered commission questions on reports that it blocked some phone numbers, possibly in violation of FCC rules.
Google said the phone numbers in question accounted for only 1.1 per cent of its traffic but were racking up over 25 per cent of its operating expenses.
Google said it found that calls were being routed to carriers in rural areas that were charging excessive connection and termination fees. The company said it filtered out the offending numbers in its Google Voice service in order to protect itself.
"Google Voice now maintains a restricted list only for those specific telephone numbers that match our data filters and appear to be associated with local carriers and associated businesses generating substantial in-bound traffic," the letter read.
"We utilize a look-up table which is checked on every outbound call to determine if the number being requested is inactive."
The response is the latest in what has become an ongoing tussle between Google, AT&T and the FCC over the voice service. AT&T has accused Google of violating net neutrality rules by blocking the numbers, but Google maintains that it is using a perfectly legal method that other carriers also use to counter billing scams. µ
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