People in Ethiopia are calling strangers in Eritrea as phone lines are opened after 20 years

In this grab taken from video provided by ERITV, Ethiopia's Prime Minister Abiy Ahmed, background centre is welcomed by Eritrea's President Isaias Afwerki as he disembarks the plane, in Asmara, Eritrea, Sunday, July 8, 2018.

Lagos, Nigeria (CNN)Frehiwot Negash picked up the phone and called a random number.

The Ethiopian finance manager was trying to test if indeed she could now place a call to Eritrea after 20 long years of being cut off from the neighboring country in the aftermath of a bloody border war.
The person on the other line answered. It was a hotel.
    Negash, 33, told CNN: "The receptionist picked up. So I said 'I'm calling from Ethiopia.' Then I passed the congratulations message to her, and I told her that I am very happy and she also said 'I am happy too."
    Negash says she now plans to visit Eritrea later this year.
    After it was announced on Monday that phone lines would be restored between both countries, Ethiopia's telecoms company, Ethios, sent text messages to its 57 million subscribers, saying they could now call Eritrea.