DAG1000-4O FXO analog gateway is a type of access gateway offering
seamless connectivity between IP-based telephony networks and legacy
telephones (POTS) and PBX systems. The analog gateway has 4 FXO ports
and is used to connect to analog PBX or the PSTN lines of telecom carriers.
With the standard SIP protocol, it's compatible with leading IMS/NGN
platforms and SIP-based IP Phone systems. It provides low-cost and
easy-to-use VoIP solutions for small businesses, SOHO, remote
offices as well as enterprises with multiple branches
