Mandela launched the 46664 campaign – "Give one minute of your life to Stop Aids" campaign in London on Tuesday.

South Africans have been called upon to dial the numbers 46664 or log on to website www.46664.com to join the petition.

It is a world-wide music-led campaign on the website and via phone networks to raise funds and the awareness of the impact of Aids in Africa.

The campaign will culminate in a three-hour concert to be held at Cape Town's Green Point Stadium on November 29, in association with MTV's Staying Alive. A 46664 CD and DVD are planned for release early next year.

The show will be broadcast free to people around the world via television, webcast and radio, while SABC will broadcast the entire show live.

To date, those who have committed to joining leading African artists include Anastacia, Baaba Maal, Beyonce, Bono, Johnny Clegg. The Corrs, Eurythmics, Moloko, Paul Oakenfold featuring Shifty Shell Shock and TC, Danny K, Bongo Maffin, Ladysmith Black Mambazo, Queen and Zucchero.

Some of the campaign's sponsors include cellular giants Vodacom and media group Tiscali on-line, while Real Concerts will promote the concert.

At a press conference held at Vodaworld in Midrand on Tuesday, organisers were unable to connect to a satellite to London where Mandela was speaking live, due to a technical problem.

Highlights will premiere on MTV channels globally on World Aids Day, December 1.

The campaign calls for people to join the global petition via local call-in numbers on which they can hear songs written by artists, contribute directly to the fight against the disease in Africa, and be directed to the 46664 website to hear music, purchase exclusive 46664 tracks, download ringtones, make donations and leave email addresses.

Mandela also called on the world's citizen's to take action by pressurising their governments to declare a global Aids emergency. Tiscali's spokesman Diego Massida said 46664 was the prison number of Mandela on Robben Island in Cape Town where he was held in captivity for 18 years.

"The former president has, until today, held back his prison number.

"In his prison days he was simply that – a number – 46664.

Today the millions of people affected by Aids are also increasingly numbers and statistics."

Massida said Mandela's prison number would become the mark of awareness building and fund raising in an attempt to free the world of this humanitarian disaster.

Vodacom's spokesman Mthobi Tyamzashe said the Nelson Mandela Foundation will be the ultimate beneficiary of the funds collected from the campaign.

The first track 46664 (Long Walk to Freedom) which was written by singers Bono, Dave Stewart and the late Joe Strummer and performed by Bono, Youssou N'Dour, Abdel and Dave Stewart was released on Tuesday – and in a music industry first will only be available throughout the world via telephone lines, then subsequently on the website.

The campaign is supported by United States president Bill Clinton and world-renowned talkshow host Oprah Winfrey By calling the telephone number, callers will hear messages from celebrities including Robert de Niro, Britney Spears, Pink, David Bowie and Beyonce.

During the International Aids Conference earlier this year, Mandela was reported to have said that "Aids is no longer a disease it is a human rights issue."

"A tragedy of unprecedented proportions is unfolding in Africa. Aids today in Africa is claiming more lives than the sum total of all wars, famines and floods and ravages of such deadly diseases as Malaria. We must act now for the sake of the world." –Sapa