... -400GSM is a four-way wireless voice cards 2)slot type is PCI socket, 3)line PCI 2.2 standards 4)GSM Channels ... :SinoV-GSM400E is a four-way wireless voice cards, slot type is PCI-E socket, line PCI-E 2.2 standards. It is ... ) Call back4, GSM (CDMA) wireless bypasses system5, GSM (CDMA) wireless call centre.Hardware and software requirements:1, Interface: PCI 2.22, CPU 800 ...