製品仕様：

• Support door phone and doolock: Yes
• Programming by analog phone: Yes
• Place of Origin: Guangdong, China (Mainland)
• モデル番号: SV-308
• 銘柄: vtelecom
• Internal Extensions: 8
• External CO Trunks: 3
• Ext. support ordinary/simple phones: Yes
• color: black
• Certificate: CE