Well. If you enter Nicosia FIR via Ankara FIR, you should contact Nicosia FIR and not the so called Ercan. Frequencies for Nicosia FIR are (taken from AIP Cyprus)
West Sector: 125.5 Primary, 130.0 Secondary
East Sector: 126.3 Primary, 123.55 Secondary
South Sector: 124.2 Primary, 128.6 Seconday
Ankara FIR will never tranfer control to Nicosia FIR.
Nicosia FIR will never transfer you to Ercan as is a not recognised by the official Republic of Cyprus.