Lawyers for deposed Egyptian President Mohammed Mursi withdrew in protest after he appeared in court today.
Mr Mursi is charged of conspiring with foreign groups to commit terrorist acts in Egypt.
Mr Mursi's legal team protested they could not hear their client speak from inside a soundproof glass cage.
The judge controls the microphone that allows defendants to be heard.
The judge ordered a lawyer's syndicate to assign 10 lawyers to defend Mursi at the trial's next hearing on 23 February.
In what they call "the biggest case of conspiracy in the history of Egypt", prosecutors say Mr Mursi's Muslim Brotherhood hatched a "terrorist plan" in 2005 involving the Palestinian Hamas group as well as Shia Iran and its Lebanese ally Hezbollah.
Hamas have dismissed the charges as "fabrications and lies".
The Brotherhood also rejects the allegations, saying it is a peaceful organisation with no links to any violent groups.
Mr Mursi's Muslim Brotherhood propelled him to victory in the 2012 presidential election, but it has been driven underground since the army took power in July after mass protests against his rule.
The state, which has declared the Muslim Brotherhood a terrorist group, has killed about 1,000 of its members and jailed thousands of others, including top leaders.
The Muslim Brotherhood accuses the army of staging a coup and reviving a dictatorship, an allegation the military denies.
Elsewhere, a bomb on a tourist bus in Egypt's Sinai killed at least two South Koreans and the Egyptian driver.
The bus was travelling from St Catherine's Monastery, a popular tourist destination in the south Sinai, to nearby Israel when it was attacked.