Great Britain will travel to the the Black Sea city of Constanta for their Fed Cup World Group II play-off against Romania.
The home city of Romanian number one Simona Halep will host the tie on outdoor clay on 22-23 April.
Britain are looking to return to the elite level of the competition for the first time since 1993, but will go into the tie as heavy underdogs.
Halep, the world number four, has already said she will play in the tie.
Romania have four other players in the top 100.
GB captain Anne Keothavong's team kept their promotion hopes alive last month with a 2-1 win over Croatia.