Security forces patrolled the tense streets of Kinshasa on Sunday after the suspension of last-ditch talks to find a peaceful way out of the nations political crisis sparked by the end of President
Negotiations to agree a way forward for the Democratic Republic of Congo after December 20, when Kabila's second term finishes, were halted on Saturday with no significant progress made.
Fears of fresh political violence in mineral-rich but unstable Congo were running high, with no elections planned and Kabila showing no inclination to step down.
Talks are due to resume on Wednesday when Catholic bishops acting as mediators return from a long-planned trip to Rome -- a day after Kabila's mandate ends.
Roadblocks put up overnight were opened on Sunday morning but security forces were posted in large numbers in opposition strongholds and other flashpoints around Kinshasa, according to AFP reporters.
"We're waiting to see what happens. The politicians are okay, it's us, the little people, who suffer," a supervisor at a cleaning company, told AFP.
Kabila, barred from seeking a third term by the constitution, has indicated he wants to stay in power until a successor is chosen, but some opposition figures want him to hand over to a transitional leadership while awaiting the vote.
The 45-year-old has been in power since his father Laurent Kabila was assassinated in 2001. He was elected in 2006, and again in 2011 in polls decried as rigged by the opposition.
The talks sponsored by the Congolese bishops' conference (CENCO) brought together the ruling party and fringe opposition groups, allied against a mainstream opposition coalition led by the 84-year-old Etienne Tshisekedi.
When they broke up on Saturday evening, no progress had been made on any of the main issues that divide the two sides.
Kabila's opponents accuse him of delaying the vote in the hope of tweaking the constitution to extend his family's hold over a nation that is almost the size of western Europe.
Tshisekedi's opposition grouping threatened to bring people into the streets from Monday if the talks failed, in a bid to force Kabila from office.
Leaflets urging people to retake Kinshasa "street by street, district by district until we retake the whole of the DRC", have begun to circulate in the capital.
But so far the opposition has not given an order to mobilise, while the international community is urging calm on all sides.
Church mediators have warned that failing to find a political settlement will lead to "an uncontrollable situation", a stark prospect in a country that barely two decades ago plunged into the deadliest conflict in modern African history.
Congo's two wars in the late 1990s and early 2000s dragged in at least six African armies and left more than three million dead.
The European Union urged the two sides to reach a deal for "transparent, credible" elections to be held as soon as possible.
In Rome, Pope Francis urged worshippers to "pray that the dialogue in the Democratic Republic of Congo proceeds calmly, to avoid any violence and for the good of the whole country."
A democratic handover would break ground for Congo's 70 million people who since independence from Belgium in 1960 have never witnessed political change at the ballot box.