The Telstra Smart Mod​em Gen 2 (DJA0231) with Telstra wireless phone handset

Spedifications include dual-band Wi-Fi 5 (802.11ac Wave 2), supporting speeds up to 2.5 Gbps. It features four Gigabit LAN ports, a Gigabit WAN port, a DSL port, and a built-in mobile SIM for 4G backup with speeds up to 25 Mbps download and 5 Mbps upload during an outage. It also includes VoIP capability and USB 3.0 ports. 

Wireless

• Wi-Fi Standard: 802.11ac Wave 2 (Wi-Fi 5)
• Frequency Bands: Dual-band (2.4 GHz and 5 GHz)
• Max Wi-Fi Speed: Up to 2.5 Gbps

Wired connections

Ports:

• 1 x Gigabit Ethernet WAN port (for NBN or Cable)
• 4 x Gigabit LAN ports
• 1 x DSL port (for FTTN/B or ADSL)
• Other Ports: USB 3.0 

Backup and Voice

• Mobile Backup: Built-in 4G backup via a pre-activated SIM card
• Backup Speeds: Up to 25 Mbps download / 5 Mbps upload during an internet outage
• VoIP: Supports voice calls via an RJ12 phone port

Additional features

• Beamforming technology: Helps to optimize Wi-Fi signals
• Automatic switching: Can automatically switch to the 4G network during an internet outage