Cambodia has not replied to a Thai request for the meeting of the General Border Committee to be brought forward from April to March, Defence Minister Prawit Wongsuwon said on Thursday.
Gen Prawit said Thailand wants the 8th GBC meeting to be held this month so that the two countries can hold bilateral talks sooner to solve the problems between them.
The previous GBC meeting was held in Pattaya, Chon Buri, in November.
Cambodia will host the 8th meeting of the GBC, which is co-chaired by Gen Prawit and Cambodian counterpart Gen Tea Banh.
"Cambodia has not yet replied to our request. We want the meeting to be held sooner so that we can talk about deployments of troops along the border and cooperation in various fields," Gen Prawit said.
The two countries also need to talk over arrangements for Indonedian observers to visit the border area. Problems should be solved through negotiation, he added.