Caller ID（Privacy） | Private header support for anonymous calls. |
Firmware Upgrade | - Configuration file authentication (before accepting changes). |
| - TFTP/HTTP upgrade support, allows users to specify different URLs for |
| the server to download from. |
Advanced Server Features | DNS SRV support, SIP server failure transfer, message waiting indicator |
| and custom screensaver. |
Security | - MD5 and |
| - Security protection: SIP over TLS and SRTP. |
| - Support for |
| - Support for OpenVPN for increased security and control. |
Grandstream Networks, Inc. | GXV3175 USER MANUAL | Page 10 of 119 |
| FIRMWARE VERSION 1.0.0.32 | Updated : 12/2010 |
