Abstract: The Australian B2B fixed services market, encompassing business voice, connectivity, and related services, is projected to reach $7.192 billion by FY28, growing at a modest 0.9% CAGR. Legacy fixed voice services will decline rapidly, while IP voice, Ethernet, Internet, and network services will drive medium-term growth. The Enterprise fixed services market is estimated at $4.518 billion in FY23, growing at 1.2% CAGR. SMBs, recovering from the pandemic, will see limited growth due to legacy voice decline. The Data & Internet market will grow at 0.2% CAGR, with Ethernet and Internet gains offsetting IP-VPN losses. Network services are expected to grow at 2.6% CAGR, reaching $3.619 billion by FY28.