Grandstream HT841 4 FXO, 1 FXS, 2 GigE PoE NAT Router extension module Built-in network switch with 5

Built-in network switch with 5 or 10 Gigabit ports

Grandstream Upgrade for additional 50 users/extensions (up to 200 total users/exts) UC-Extra-50 Ext/Users Upgrade

3 line keys

Built-in PoE 802

Grandstream HT841 4 FXO, 1 FXS, 2 GigE PoE NAT Router extension module Built-in network switch with 5Supports 3 SIP profiles through 1 FXS port and 4 8 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