Telstra customers could have their coverage interrupted over the next two days across Geelong.
The Telco is advising works are being carried out near its network tower at Geelong West by a third party.
It says the works will require a temporary disruption to the network between 8an and 4pm.
Customers should receive text messages advising of the upcoming works.
Landline services, internet and mobile coverage from other providers will not be impacted.
Telstra says any emergency calls from a Telstra mobile when the site is off air will be diverted to any working mobile network.