From the RNZ website:
Around 10,000 phone lines have been rendered useless due to a complex software fault at Telecom's Pukekohe exchange.
Telecom says it's not known how long it will take to fix them. The fault occurred on Thursday.
A complex software fault at the exchange means any calls, including 111 emergency calls, cannot be made until the problem's fixed.
Telecom says broadband is unaffected, and it has bolstered support for mobile phones to carry some of the load that would normally be carried by landlines.
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