user manual

Grandstream Networks, Inc. GXV3175 USER MANUAL Page 10 of 119
FIRMWARE VERSION 1.0.0.32 Updated : 12/2010
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 MD5-sess DIGEST encoding and authentication.
- Security protection: SIP over TLS and SRTP.
- Support for TR-069.
- Support for OpenVPN for increased security and control.