key features support sip, iax2 support 2 sip servers and 1 iax2 server running at the same time support 3 settings storage, switch by keypad support major g7.xxx ( 711a/u,723,729¡­) codec call hold, call forward, call transfer e.164 dial plan and customized dial rules configurable jitter buffer size 80 groups incoming & outgoing calls memory reviewed¡¢stored phone book with 100 groups memory user define ring tone, call id display static/dynamic wan-ip-addressing, support pppoe safe mode provide reliability support poe (power over ethernet) (option) adjustable user password and super password configure file download, upload and update/upgrade by ftp,http and tftp interface 1 x wan; 1 x lan danny@vnetphone.com www.vnetphone.com skype id:cnwxdkj msn:szwxdkj@hotmail.com