Syria has been warned they will face fresh sanctions unless they agree to the Arab League proposal to let observers into the country.
League members said Syria had until Sunday to allow Arab League officials to observe the current situation in Syria.
At a meeting of the Arab League ministerial committee on Saturday, Qatari PM Sheikh Hamad bin Jassim Jabr al-Thani said:
"We asked the Syrian minister of foreign affairs if the Syrian government will agree to sign tomorrow [Sunday] and we are still waiting for a reply.
"Aside from the deadline, we are willing to convince them that this is the right way - to sign the protocol and agree on the Arab initiative as it is."
The Arab League imposed sanction on Syria last week after its refusal to cooperate with the body over its crackdown on anti-government protesters.