... fully compatible with leading Soft switch and SIP servers. 1/4/8 GSM/CDMA Channels Optional Up to 8 ... black IP list management. Technical Specifications: Physical Interfaces •1/4/8 GSM/CDMA channels •VJ-04GV/VJ-08GV ... : 1 WAN, 3 LAN ports •VJ-01GV: 1WAN, 1LAN ports ... Peer SIP proxy call Voice Codec •G.711, G.723.1, G.729ab •Coding: A-law, μ-law •Enhanced (Carrier ...