The SinoV-S500 is an analog GSM cellular VoIP gateway that helps directly interconnect a SIP-supporting VoIP network with GSM networks. It features a strong housing to offer reliable protection to the internal components. Well engineered, this device ensures excellent performance.

• 4/8 channels: 850/900/1,800/1,900MHz quad-band GSM cellular network.
• SMS receiving/batch sending.
• AT command compatible.
• Support SIP registration and peer-to-peer.
• Encryption: RC4, VOS, SinoV private, etc.
• Hotline, phone book, speed dial, and dial plan.
• Update firmware by local or Internet.
• Field proven compatible with asterisk-based soft switches.