ENGENIUS DURAFON-SIP Sistema Telefonico IP de Largo Alcance / Hasta 23000 m en Almacenes / Hasta 12 km en Granjas o Ranchos / 12 Pisos de Penetracion / Funcion de Radio de 2 Vias/ Hasta 10 cuentas SIP
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How to Configure an EnGenius DuraFon SIP System with ONSIP Sip Service.