North Korea has restored a hotline with South Korea, as the two sides discuss where to hold talks on a jointly-run industrial zone.
Pyongyang said early on Friday it would reopen a Red Cross line that was cut in March.
It also invited officials to Kaesong for talks on Sunday on restarting operations at the factory zone, after the two sides agreed in principle to talks on Thursday.
Seoul has agreed to the talks on Sunday, but wants them to take place at Panmunjom.
Work at the Kaesong industrial zone has been halted since April, amid high tensions.
Ties between the two Koreas deteriorated earlier this year in the wake of a nuclear test by the North on 12 February.