The Contractor shall provide telephone eguipment in accordance with the following specifications.Telephone cable shall be as specified in 3C.13.
Analogue telephone set shall be provided with on hook flash key capable of adjusting flash time in range of 100-350ms compatible with the EGAT's PABX. Telephone set shall be generally of desk type mounting and line cord terminated at the jack station unless otherwise not possible,wall type may be considered.
Distribution frames or cable terminating frames shall be metal enclosures provided with lockable hinged door. The connection terminal block shall be equipped with solid-state,fail-safe,and self-resetting five pin 230V type overvoltage and over current protection.