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Phone outages afflicted AT&T in Mich. and Cal. Tues. In Mich., a...

Phone outages afflicted AT&T in Mich. and Cal. Tues. In Mich., an unspecified network glitch knocked out 911 service in portions of Detroit for about 6 hours. Cellphone users were able to place 911 calls and 7-digit local emergency…

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numbers still worked. The outage began around 2:30 p.m. and was corrected around 8:30 p.m. In Cal., some 4,600 AT&T customers in Santee, Cal., lost all phone service Tues. afternoon when a sewer construction crew sliced through an underground conduit carrying AT&T’s lines and ripped several yards of the conduit from the ground. AT&T said all cut off customers would be restored by Fri.