Rogers says its voice services are being restored after experiencing widespread network outages that began on Sunday afternoon.
Users in several parts of the country reported problems with making wireless calls in some areas, with landlines also affected.
Text messages, internet and data services were unaffected.
“Voice services are restoring with a very limited number of customers experiencing intermittent interruption to voice calls,” Michelle Kelly, director of communications at Rogers, said in a statement on Monday. “Teams are working hard to fully resolve the issue and we sincerely apologize to our customers.”
The outage saw some customers experience dropped calls and some were unable to place or receive calls on their mobile phone or wireless home phone service.
Toronto police Const. Katrina Arrogante told CityNews some 911 calls were also dropped due to the outage. For such calls, police were sent to the address as a precaution.
Police in London, Ont., also tweeted that they were experiencing problems.
Kelly said that as of Sunday night, 911 was available to all customers.
Rogers is the parent company of CityNews and 680 NEWS.