We are  voip device  manufacturer in China.Our ipphone&IAD support SIP/Iax2/Mgcp/H323.it supports all kinds of sip system like ASTERISK etc. Many USA, italy , singapore and other countries' company are using our ipphone and IAD for their sip system.

If you have any further queries on our products, please feel free to contact us.

Best Regards,

archfish
Sales and Marketing Dept.
Shenzhen Goldenfuture Technology Co.,ltd,China
Email:archfish@goldenfuture.com.cn
Msn:archfish1213@hotmail.com
Tel: +86 755 26506933
Fax: +86 755 26504895
http://www.goldenfuture.com.cn