TECHNICAL REFRESH OF EXISTING AVAYA PABX TELEPHONE SYSTEM OR REPLACE WITH NEW PABX TELEPHONE SYSTEM AND CONTACT CENTRE WITH 05-YEAR COMPREHENSIVE MAINTENANCE FOR PASIR RIS-PUNGGOL TOWN COUNCIL (CONTRACT PERIOD – 03 MONTHS + 60 MONTHS COMPREHENSIVE MAINTENANCE) (✉ : MISC-24-003-PRPG@emservices.com.sg)