Nothing to do with phoning your mom. It means to remember, recollect:

"I can't, jist thease minit, cal-t-home when 'e died."

"I know your face quite well, but I can't call'ee home."

"I caant call home when he left."

Strangely, to Call Home meant to publish the banns of matrimony, especially for the third time. Thomas Hardy used it in Tess of the d'Urbervilles:

"You was not called home this morning."

Now put on your best West Somerset accent and say this:

"Ded-n noa' dhai wuz gwaa-yn tu bee maa reed ! wai dhai wuz u-kyaa-ld oa'm laas Zun'dee."

(I didn't know they were going to married. Why, they were called home last Sunday.)