Supports the SIP agreement.TFTP/DHCP/PPPOE CLIENT
*　Incoming and Outgoing Call Inquiry,Redial,Edit Function
*　Caller's Number and Identify.
*　100 Groups for Personal Names Telephone Number Book
*　Three-side Conversation,Incoming Call to Switch Over
*　Hand Free,Handle,The Coming Bell Volume 15 Grades of Adjustment
*　RJ45 Double Guides by the Function
*　HOLD,FLASH,REDIAL,HF Funtion
*　Supports the Software to Renew
*　Supports Different Three Items of SIP Server
*　IP Address Inquiry
* The Newwork Connects Successful Instruction
* LED Prompt Registration,HOLD,HF Working Mode Active Status