Shaw offers home and business telephone service along with its internet and cable television packages. ((Shaw))

An unknown number of Shaw telephone customers in B.C. lost service most of Friday after major problems developed with the network.

"We are currently experiencing a phone outage impacting customers in Central B.C., Vancouver and Vancouver Island," said a message posted on Shaw's website around 1:30 p.m.

Service was restored at about 5 p.m. PT, the company said on its website.

The problem was affecting calls between Shaw customers and other networks, but 911 calls and calls between customers were getting through according to the statement.

"We have been successful in rerouting the majority of those calls late this afternoon. We expect the issue to be fully solved by this evening," said the message.

No problems were reported with Shaw's cable television and internet service. But people also might be having problems with their alarm systems if those systems are connected to a Shaw telephone.

Michael Jagger with Provident Security in Vancouver said customers started calling the company Friday morning complaining their home alarms weren't working.