Optus customers wanting to contact family and friends following the tragic events in Brussels will be able to make free calls to Belgium throughout March.
Optus consumer customers with post-paid mobile or home landline services will receive free standard voice calls to Belgium from 12:01am AEDST Tuesday 22 March until 11:59pm 31 March, 2016.
Optus prepaid mobile customers will receive zero-rated standard voice calls to Belgium from 07:00am AEST Thursday 24 March until 11:59pm 31 March, 2016.
Expect there to be some connectivity issues, though.
"The high volume of activity on the telecommunications networks around Brussels may affect some calls getting through," Optus said in a statement. "Customers may experience busy tones, recorded voice announcements or the call might go straight to voicemail when calling."
"We understand this can be frustrating and encourage customers to please be patient."
Calls made to Belgium during the allocated times will not be charged to your next bill, Optus says.