The Federal Communications Commission and Verizon — the utility that services the county's emergency call center — remain at odds over the cause of a glitch that disrupted 911 service across Montgomery County this year, the Gazette reports.

About 8,300 callers to the county's 911 center received busy signals Jan. 26, while in Prince George’s County, about 1,700 calls to 911 were blocked. Verizon has said the disruption was limited to cellphone calls, but some county residents reported not being able to get through to 911 using land lines.

The FCC, which has continued its investigation of the outage, is also questioning whether Verizon — the sole provider of 911 services in Maryland — should have reported the failure to the federal agency, which it did not. Verizon has referred to the problem in Montgomery and Prince George's counties as a "focused overload" caused by a high call volume during a snowstorm Jan. 26. Verizon used that description to explain the glitch in a March 10 memo to the FCC, and earlier this month before the Maryland Public Service Commission in Baltimore and the Montgomery County Council.

Read more about the FCC’s investigation of 911 outages in Montgomery County in the Gazette.