ROBY TECHNOLOGY CO., LIMITED is supplying with Asterisk cards,IP PBX,VoIP Telephone System. Asterisk Cards include analog FXS FXO cards and ISDN PRI E1 /T1 cards.You may select 1/4/8/24 ports, PCI or PCI-E connector, with or without Echo cancellation hardware. All of the cards support open source code softwares such as Asterisk, FreePBX,Issabel and standard driver dahdl. Based on the card,you may build an VoIP phone system ,IP PBX,SIP server or call center easily at a low cost.
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