The City of Philadelphia said a phone outage that prevented people from calling 9-1-1 from landlines has been resolved.
The outage lasted from Monday afternoon into Tuesday morning, getting back online around 11:30.
The outage did not affect cellphones.
City officials said Monday that any emergency calls for police, fire or medical help should be made from cellphones for the time being.
The city said a Verizon issue is the cause of the outage and that they are working with the telecommunications company to fix it.
A Verizon spokesperson said a manhole cover caused significant damage to fiber optics and cooper wires. The repairs continued Tuesday, the City of Philadelphia Office of Emergency Management said.
The same outage hindered phone communications at Penn Medicine and the University of Pennsylvania earlier on Monday, Philadelphia police said.
Monday afternoon, Saint Joseph's University announced on Twitter that their phone system was also impacted by the 911 outage and encouraged students to use their cellphones until the problem is fixed.