製品仕様：

• Three-way conferencing: support
• programming by analog phone: Yes
• Place of Origin: Guangdong, China (Mainland)
• モデル番号: SV-308
• 銘柄: vtelecom
• Extensions: 8 Extensions
• color: black
• Certificate: CE
• Caller ID: YES
• Call hold, transfer: support
• C.O Lines: 3 Lines