Grandstream Analog FXO Gateway
HT841
- Supports 3 SIP profiles through 1 FXS port and 4 FXO ports
 - High-performance NAT router
 - Lifeline support (FXS port will be hard-relayed to FXO port) in case of a power outage
 - 3-way voice conferencing per port
 - Automated & secure provisioning options using TR069
 - Supports T.38 Fax for reliable Fax-over-IP
 - Failover SIP server automatically switches to secondary server if the main server loses connection
 - Strong AES encryption with security certificate per unit