The leader of rebel group M23 has warned that the peace deal signed two years ago could fail because of the state's lack of commitment.
But fears of civilian casualties could see the army renege on a commitment to disarm combatants.
Violence continues in the eastern DRC after an attack from an armed group left three South African soldiers injured.
About 12 soldiers have been convicted in the east DRC where government troops have battled to clamp down on several armed groups.
The end of conflict with the M23 rebels has people in the eastern DRC hoping for peace.
Talks to finalise a truce between the DRC and defeated M23 rebels have collapsed, in a setback to efforts to end one of Africa's longest conflicts.
The DRC and defeated M23 rebels are set to sign a peace deal in what the UN hopes will be a key step in efforts to end decades of war.
Defeated M23 rebels in the Congo are poised to sign a peace deal with the government, in what is hoped will be a turning point to end decades of war.
UN experts have accused Uganda and Rwanda of backing M23 rebels, and despite denials, officials in Kigali have been anxious over the turn of events.
M23 rebel leaders have been pleading with Uganda's president Yoweri Museveni to keep fleeing rebel soldiers that have fled into his country safe.
South African diplomats celebrate Jacob Zuma's military and diplomatic interventions contribution to the surrender of the M23 rebels in the DRC.
After freezing financial aid to Kigali, Washington has indicted it is ready to lift sanctions against Rwanda if it severs ties with rebel group M23.
Rebels in the Democratic Republic of Congo's powder-keg east have surrendered after a crushing UN-backed offensive ended their 18-month insurgency.
Following an announcement by the DRC government declaring victory, M23 insurgents say they have "decided from this day to end its rebellion".
DRC soldiers are fighting off some 200 M23 rebels who are hiding after being ousted from their last stronghold.
The M23 have lost their last stronghold after Democratic Republic of Congo troops captured the area, which is the rebels' main base.
Jacob Zuma has reiterated his support for the DRC government, saying the hundreds of soldiers stationed there is testament to SA's commitment.
If peace is what President Jacob Zuma genuinely wants, then he should pull South African troops from the UN mission in the DRC, say the M23 rebels.