Britain finished top of Pool C to earn a play-off against Pool B winners Croatia on Saturday after wins for Johanna Konta and Heather Watson secured victory over Turkey.
Konta had to fight back from a set down to beat Cagla Buyukakcay 5-7 6-4 6-3 while Watson thrashed Ipek Soylu 6-0 6-1, while in the dead rubber, Laura Robson and Jocelyn Rae beat Ayla Aksu and Pemra Ozgen 6-2 6-2 in the doubles to complete a comfortable 3-0 triumph.
If Britain beat Croatia, they will progress to another play-off in April to move out of Euro/Africa Zone Group I, the competition's third tier, and into World Group II.
Konta's task will be to overcome Croatia's talented 19-year-old Ana Konjuh, ranked 37th in the world and widely considered to be one of the game's rising stars.
Watson will be up against another youngster in 20-year-old Donna Vekic. Vekic's progress has slowed slightly since she burst onto the scene as a teenager but she will push Watson who, at 72, is ranked only 12 places higher in the world.