Features list:

1. SSH server available (default username:root, password:OpenVox, port:22); 
2. DDNS: www.oray.com, no-ip.com and dyn.com; 
3. OpenVPN client built-in (CLI setup only); 
4. Downloading files online through wget; 
5. SD card automatically mounted, USB not yet; 
6. Enable LAN, dual Ethernet interfaces are available; 
7. Other bugs fixed; 
  

You should upgrade the latest firmware to acquire more features and functions:

1. Login into the web GUI, click the "update"  options;

2. Choose the krc_release.ba fileŁ¬upload the image, waiting for five minutes;

3. Both WAN and LAN ports are available now.

   WAN: DHCP (unchangeable)
   LAN: Static 192.168.1.254 (changeable)
   
   You can connect the device via ssh, change the default IP of LAN port:

 1) vi /etc/hosts 
    change the 192.168.1.254 to the IP you want
 2) vi /flash/webctrl/meta/metafile.dat
    change the 192.168.1.254 under [lan] to the IP you want

Before updating firmware, notice that your important file should be backed up first.

Latest firmware and HOW TO:
http://downloads.openvox.cn/pub/firmwares/icalldroid/

You can find manuals below:
http://www.openvox.cn/en/products/ippbx/icalldroid.html?page=shop.product_details&flypage=flypage.tpl&product_id=109