["48-Port FXS Analog Telephone Adapter - For professional VoIP integration The Grandstream GXW4248 v2 offers a reliable solution for integrating up to 48 analog telephones and fax machines into VoIP networks. Ideal for large companies and service providers", "48 RJ11 FXS ports & 1 50-pin Telco connector", "Gigabit Ethernet (10/100/1000 Mbps) connection", "Backlit 132x48 graphic LCD with multilingual support", "Supports up to 4 SIP server profiles with independent SIP accounts per port", "Security features: TLS, SRTP, HTTPS, AES-128, Secure Boot", "T.38 Fax over IP and G.711 Fax Pass-through", "Provisioning via TR-069, XML and HTTPS", "HD audio with Opus and G.722 support", "Simultaneous 3-way voice conference per port", "Flexible mounting: Desktop and rack mounting possible", "Grandstream GXW4248 v2 adapter", "Power supply", "Network cable", "Rack mounting kit", "Quick guide"]