Serbia defeated Russia in Moscow to progress through to their first Fed Cup final, where they will meet defending champions the Czech Republic.
Serbia were locked at 1-1 in their semi-final at the Sports Palace following day one but they claimed victory after winning the opening two rubbers on Sunday.
Ana Ivanovic, having lost to Svetlana Kuznetsova on Saturday, battled back from a set down to beat Anastasia Pavlyuchenkova 3-6 6-0 6-3 to put her country 2-1 up and then Jelena Jankovic claimed the decisive win with a straight-sets triumph over Kuznetsova.
Jankovic, the world number 15, followed up her victory over Pavlyuchenkova in Saturday's opening rubber with a 6-1 6-4 win over Kuznetsova to put Serbia 3-1 up and secure their spot in November's final.
An ecstatic Jankovic said after her victory over Kuznetsova, which was her 13th in her last 14 Fed Cup singles matches: "I have goosebumps right now because it's so exciting for us.
"At the end I was thinking, 'Oh my God, we're going to get in the final.' I was like, 'Just get the serve in, just play the point!' I was so happy to win in the end, it wasn't easy," she said on www.fedcup.com.
Russia gained some consolation in the doubles when Pavlyuchenkova and Elena Vesnina joined forces to thrash Bojana Jovanovski and Aleksandra Krunic 6-4 6-0, but it was too little too late to prevent the four-time Fed Cup winners tumbling out.
The Czech Republic, who defeated Russia in last year's final, sealed their berth in the final with a 4-1 semi-final win over 2009 and 2010 champions Italy in Ostrava.
Leading 2-0 from Saturday, the Czechs secured their passage on Sunday when world number three Petra Kvitova gave them an unassailable 3-0 lead with a 6-4 7-6 (7/1) defeat of world number three Francesca Schiavone - Kvitova's 29th successive win indoors.
"It's an unbelievable feeling. I really wanted to be again in the final. I hope that the public that was here come to support us in the final again," Kvitova said following her win.
"Every Fed Cup I'm playing I'm nervous. Francesca played unbelievable tennis. I'm very happy I won."
The Italians, the world number ones, made it 3-1 when Sara Errani, bouncing back from her straight-sets defeat to Kvitova on Saturday, beat Andrea Hlavackova 6-2 2-6 6-2.
However, Errani could not follow up that success in the doubles as she and partner Flavia Pennetta were forced to retire when leading 6-5 in the first set against Hlavackova and Lucie Hradecka.
